diff --git a/dev/Sieve/Grammar.js b/dev/Sieve/Grammar.js
index d83df718b..595a34bda 100644
--- a/dev/Sieve/Grammar.js
+++ b/dev/Sieve/Grammar.js
@@ -9,7 +9,7 @@ import {
 	MULTILINE_DOTSTART
 } from 'Sieve/RegEx';
 
-import { arrayToString, getMatchTypes, getComparators, koObserve } from 'Sieve/Utils';
+import { arrayToString, getMatchTypes, getComparators } from 'Sieve/Utils';
 
 /**
  * abstract
@@ -154,7 +154,6 @@ export /*abstract*/ class TestCommand extends GrammarCommand
 		this._comparator = '';
 		this._match_type = '';
 		this.relational_match = ''; // GrammarQuotedString DQUOTE ( "gt" / "ge" / "lt" / "le" / "eq" / "ne" ) DQUOTE
-		koObserve(this, 'match_type');
 	}
 
 	get require() { return /:value|:count/.test(this._match_type) ? 'relational' : ''; }
diff --git a/dev/Sieve/Utils.js b/dev/Sieve/Utils.js
index c671af8ae..5f5d13f07 100644
--- a/dev/Sieve/Utils.js
+++ b/dev/Sieve/Utils.js
@@ -58,18 +58,6 @@ export const
 		serverErrorDesc(text);
 	},
 
-	koObserve = (obj, prop) => {
-//		Object.getOwnPropertyNames(obj).forEach(prop => {
-//			prop = prop.replace(/^_/, '');
-			obj['ko_' + prop] = ko.computed({
-				read: () => obj[prop],
-				write: (v) => obj[prop] = v,
-				pure:true
-			});
-//		});
-//		Object.preventExtensions(obj);
-	},
-
 	getComparators = (validOnly = 0) => {
 		let result = [
 			// Default
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/BodyTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/BodyTest.html
index 8ef90f372..ec89af91d 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/BodyTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/BodyTest.html
@@ -1,5 +1,5 @@
 <!-- rfc5173 -->
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/CurrentDateTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/CurrentDateTest.html
index 10660f9ee..1f4937132 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/CurrentDateTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/CurrentDateTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5260 -->
 currentdate
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/DateTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/DateTest.html
index 2afd208d2..777b028ec 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/DateTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/DateTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5260 -->
 date
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/EnvironmentTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/EnvironmentTest.html
index 68a26f8bc..4add3740f 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/EnvironmentTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/EnvironmentTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5183 -->
 environment
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/HasFlagTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/HasFlagTest.html
index 8e89073fc..2c0dd5cc5 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/HasFlagTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/HasFlagTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5232 -->
 hasflag
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/HeaderTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/HeaderTest.html
index 9462e093b..18f7d7b69 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/HeaderTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/HeaderTest.html
@@ -1,7 +1,7 @@
 <!-- rfc5228 -->
 <input type="text" data-bind="textInput: header_names" pattern='".+"|\[".+"(,".+")*\]'>
 <br/>
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/MetadataTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/MetadataTest.html
index 347051630..761c9a71f 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/MetadataTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/MetadataTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5490 -->
 metadata
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/NotifyMethodCapabilityTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/NotifyMethodCapabilityTest.html
index 956106fce..5525e8421 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/NotifyMethodCapabilityTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/NotifyMethodCapabilityTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5435 -->
 notifymethodcapability
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/ServerMetadataTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/ServerMetadataTest.html
index ac817870f..2bb0ed42d 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/ServerMetadataTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/ServerMetadataTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5490 -->
 servermetadata
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/SpamTestTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/SpamTestTest.html
index 6c85bba88..b7570302f 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/SpamTestTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/SpamTestTest.html
@@ -1,7 +1,7 @@
 <!-- rfc5235 -->
 spamtest
 	<input type="number">
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/StringTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/StringTest.html
index 9c09c1be4..6d30eda75 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/StringTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/StringTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5229 -->
 string
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/snappymail/v/0.0.0/app/templates/Views/Sieve/VirusTestTest.html b/snappymail/v/0.0.0/app/templates/Views/Sieve/VirusTestTest.html
index 8d7ec6ccd..22dc2b060 100644
--- a/snappymail/v/0.0.0/app/templates/Views/Sieve/VirusTestTest.html
+++ b/snappymail/v/0.0.0/app/templates/Views/Sieve/VirusTestTest.html
@@ -1,6 +1,6 @@
 <!-- rfc5235 -->
 virustest
-<select data-bind="value: ko_match_type">
+<select data-bind="value: match_type">
 	<option value="">:is</option>
 	<option>:contains</option>
 	<option>:matches</option>
diff --git a/vendors/knockout/build/output/knockout-latest.debug.js b/vendors/knockout/build/output/knockout-latest.debug.js
index 0de9f2dee..c92f538ac 100644
--- a/vendors/knockout/build/output/knockout-latest.debug.js
+++ b/vendors/knockout/build/output/knockout-latest.debug.js
@@ -1362,9 +1362,9 @@ ko.expressionRewriting = (() => {
         divisionLookBehind = /[\])"'A-Za-z0-9_$]+$/,
         keywordRegexLookBehind = {'in':1,'return':1,'typeof':1},
 
-        parseObjectLiteral = objectLiteralString => {
+        preProcessBindings = bindingsStringOrKeyValueArray => {
             // Trim leading and trailing spaces from the string
-            var str = ko.utils.stringTrim(objectLiteralString);
+            var str = ko.utils.stringTrim(bindingsStringOrKeyValueArray);
 
             // Trim braces '{' surrounding the whole object literal
             if (str.charCodeAt(0) === 123) str = str.slice(1, -1);
@@ -1383,9 +1383,10 @@ ko.expressionRewriting = (() => {
                     // A comma signals the end of a key/value pair if depth is zero
                     if (c === 44) { // ","
                         if (depth <= 0) {
-                            result.push((key && values.length)
-                                ? {key: key, value: values.join('')}
-                                : {'unknown': key || values.join('')});
+                            if (key && values.length) {
+                                // Values are wrapped in a function so that each value can be accessed independently
+                                result.push("'" + key + "':()=>(" + values.join('') + ")");
+                            }
                             key = depth = 0;
                             values = [];
                             continue;
@@ -1426,34 +1427,13 @@ ko.expressionRewriting = (() => {
                     throw Error("Unbalanced parentheses, braces, or brackets");
                 }
             }
-            return result;
-        },
 
-        preProcessBindings = (bindingsStringOrKeyValueArray) => {
+            result.push("'$data':()=>$data");
 
-            var resultStrings = [],
-//                propertyAccessorResultStrings = [],
-                keyValueArray = parseObjectLiteral(bindingsStringOrKeyValueArray),
-
-                processKeyValue = (key, val) => {
-                    // Values are wrapped in a function so that each value can be accessed independently
-                    val = 'function(){return ' + val + ' }';
-                    resultStrings.push("'" + key + "':" + val);
-                };
-
-            keyValueArray.forEach(keyValue =>
-                processKeyValue(keyValue.key || keyValue['unknown'], keyValue.value)
-            );
-/*
-            if (propertyAccessorResultStrings.length)
-                processKeyValue('_ko_property_writers', "{" + propertyAccessorResultStrings.join(",") + " }");
-*/
-            return resultStrings.join(",");
+            return result.join(",");
         };
 
     return {
-        parseObjectLiteral: parseObjectLiteral,
-
         preProcessBindings: preProcessBindings,
 
         keyValueArrayContainsKey: (keyValueArray, key) =>
@@ -1471,8 +1451,9 @@ ko.expressionRewriting = (() => {
         //                      it is !== existing value on that writable observable
         writeValueToProperty: (element, property, allBindings, key, value, checkIfDifferent) => {
             if (!property || !ko.isObservable(property)) {
-                throw Error(`"${key}" must be observable for ${element.outerHTML.replace(/>.+/,'>')}`);
-//                allBindings.get('_ko_property_writers')?.[key]?.(value);
+                console.error(`"${key}" should be observable in ${element.outerHTML.replace(/>.+/,'>')}`);
+//                ko.dataFor(element).key = value;
+                allBindings.get('$data')[key] = value;
             } else if (ko.isWriteableObservable(property) && (!checkIfDifferent || property.peek() !== value)) {
                 property(value);
             }
diff --git a/vendors/knockout/build/output/knockout-latest.js b/vendors/knockout/build/output/knockout-latest.js
index 3c32d29bf..3757fe343 100644
--- a/vendors/knockout/build/output/knockout-latest.js
+++ b/vendors/knockout/build/output/knockout-latest.js
@@ -8,61 +8,60 @@
 d[a[e]];d[a[g]]=b};c.g={extend:(a,b)=>b?Object.assign(a,b):a,K:(a,b)=>a&&Object.entries(a).forEach(d=>b(d[0],d[1])),Qa:a=>[...a.childNodes].forEach(b=>c.removeNode(b)),Wb:a=>{a=[...a];var b=(a[0]?.ownerDocument||J).createElement("div");a.forEach(d=>b.append(c.ha(d)));return b},ua:(a,b)=>Array.prototype.map.call(a,b?d=>c.ha(d.cloneNode(!0)):d=>d.cloneNode(!0)),pa:(a,b)=>{c.g.Qa(a);b&&a.append(...b)},xa:(a,b)=>{if(a.length){for(b=8===b.nodeType&&b.parentNode||b;a.length&&a[0].parentNode!==b;)a.splice(0,
 1);for(;1<a.length&&a[a.length-1].parentNode!==b;)--a.length;if(1<a.length){b=a[0];var d=a[a.length-1];for(a.length=0;b!==d;)a.push(b),b=b.nextSibling;a.push(d)}}return a},Bb:a=>null==a?"":a.trim?a.trim():a.toString().replace(/^[\s\xa0]+|[\s\xa0]+$/g,""),Pa:a=>a.ownerDocument.documentElement.contains(1!==a.nodeType?a.parentNode:a),Db:(a,b)=>{if(!a?.nodeType)throw Error("element must be a DOM node when calling triggerEvent");a.dispatchEvent(new Event(b))},h:a=>c.W(a)?a():a,Za:(a,b)=>a.textContent=
 c.g.h(b)};c.U("utils",c.g);c.U("unwrap",c.g.h);(()=>{let a=0,b="__ko__"+Date.now(),d=new WeakMap;c.g.l={get:(e,g)=>(d.get(e)||{})[g],set:(e,g,l)=>{d.has(e)?d.get(e)[g]=l:d.set(e,{[g]:l});return l},Ra(e,g,l){return this.get(e,g)||this.set(e,g,l)},clear:e=>d.delete(e),Z:()=>a++ +b}})();c.g.N=(()=>{var a=c.g.l.Z(),b={1:1,8:1,9:1},d={1:1,9:1};const e=(f,h)=>{var k=c.g.l.get(f,a);h&&!k&&(k=new Set,c.g.l.set(f,a,k));return k},g=f=>{var h=e(f);h&&(new Set(h)).forEach(k=>k(f));c.g.l.clear(f);d[f.nodeType]&&
-l(f.childNodes,!0)},l=(f,h)=>{for(var k=[],n,p=0;p<f.length;p++)if(!h||8===f[p].nodeType)if(g(k[k.length]=n=f[p]),f[p]!==n)for(;p--&&!k.includes(f[p]););};return{addDisposeCallback:(f,h)=>{if("function"!=typeof h)throw Error("Callback must be a function");e(f,1).add(h)},Ya:(f,h)=>{var k=e(f);k&&(k.delete(h),k.size||c.g.l.set(f,a,null))},ha:f=>{c.u.I(()=>{b[f.nodeType]&&(g(f),d[f.nodeType]&&l(f.getElementsByTagName("*")))});return f},removeNode:f=>{c.ha(f);f.parentNode&&f.parentNode.removeChild(f)}}})();
+l(f.childNodes,!0)},l=(f,h)=>{for(var k=[],m,p=0;p<f.length;p++)if(!h||8===f[p].nodeType)if(g(k[k.length]=m=f[p]),f[p]!==m)for(;p--&&!k.includes(f[p]););};return{addDisposeCallback:(f,h)=>{if("function"!=typeof h)throw Error("Callback must be a function");e(f,1).add(h)},Ya:(f,h)=>{var k=e(f);k&&(k.delete(h),k.size||c.g.l.set(f,a,null))},ha:f=>{c.u.I(()=>{b[f.nodeType]&&(g(f),d[f.nodeType]&&l(f.getElementsByTagName("*")))});return f},removeNode:f=>{c.ha(f);f.parentNode&&f.parentNode.removeChild(f)}}})();
 c.ha=c.g.N.ha;c.removeNode=c.g.N.removeNode;c.U("utils.domNodeDisposal",c.g.N);c.extenders={debounce:(a,b)=>a.Da(d=>da(d,b)),rateLimit:(a,b)=>a.Da(d=>ca(d,b)),notify:(a,b)=>{a.ka="always"==b?null:L}};class ha{constructor(a,b,d){this.S=a;this.eb=b;this.za=d;this.Ha=!1;this.H=this.da=null}dispose(){this.Ha||(this.H&&c.g.N.Ya(this.da,this.H),this.Ha=!0,this.za(),this.S=this.eb=this.za=this.da=this.H=null)}s(a){this.da=a;c.g.N.addDisposeCallback(a,this.H=this.dispose.bind(this))}}c.P=function(){Object.setPrototypeOf(this,
 N);N.init(this)};var N={init:a=>{a.R=new Map;a.R.set("change",new Set);a.jb=1},subscribe:function(a,b,d){var e=this;d=d||"change";var g=new ha(e,b?a.bind(b):a,()=>{e.R.get(d).delete(g);e.Ia?.(d)});e.Ja?.(d);e.R.has(d)||e.R.set(d,new Set);e.R.get(d).add(g);return g},B(a,b){b=b||"change";"change"===b&&this.Ea();if(this.na(b)){b="change"===b&&this.Eb||new Set(this.R.get(b));try{c.u.nb(),b.forEach(d=>{d.Ha||d.eb(a)})}finally{c.u.end()}}},ya(){return this.jb},Rb(a){return this.ya()!==a},Ea(){++this.jb},
-Da(a){var b=this,d=c.W(b),e,g,l,f,h;b.ra||(b.ra=b.B,b.B=(n,p)=>{p&&"change"!==p?"beforeChange"===p?b.gb(n):b.ra(n,p):b.hb(n)});var k=a(()=>{b.ea=!1;d&&f===b&&(f=b.fb?b.fb():b());var n=g||h&&b.Ba(l,f);h=g=e=!1;n&&b.ra(l=f)});b.hb=(n,p)=>{p&&b.ea||(h=!p);b.Eb=new Set(b.R.get("change"));b.ea=e=!0;f=n;k()};b.gb=n=>{e||(l=n,b.ra(n,"beforeChange"))};b.ib=()=>{h=!0};b.Gb=()=>{b.Ba(l,b.L(!0))&&(g=!0)}},na(a){return(this.R.get(a)||[]).size},Ba(a,b){return!this.ka||!this.ka(a,b)},toString:()=>"[object Object]",
+Da(a){var b=this,d=c.W(b),e,g,l,f,h;b.ra||(b.ra=b.B,b.B=(m,p)=>{p&&"change"!==p?"beforeChange"===p?b.gb(m):b.ra(m,p):b.hb(m)});var k=a(()=>{b.ea=!1;d&&f===b&&(f=b.fb?b.fb():b());var m=g||h&&b.Ba(l,f);h=g=e=!1;m&&b.ra(l=f)});b.hb=(m,p)=>{p&&b.ea||(h=!p);b.Eb=new Set(b.R.get("change"));b.ea=e=!0;f=m;k()};b.gb=m=>{e||(l=m,b.ra(m,"beforeChange"))};b.ib=()=>{h=!0};b.Gb=()=>{b.Ba(l,b.L(!0))&&(g=!0)}},na(a){return(this.R.get(a)||[]).size},Ba(a,b){return!this.ka||!this.ka(a,b)},toString:()=>"[object Object]",
 extend:function(a){var b=this;a&&c.g.K(a,(d,e)=>{d=c.extenders[d];"function"==typeof d&&(b=d(b,e)||b)});return b}};c.P.fn=Object.setPrototypeOf(N,Function.prototype);c.Vb=a=>"function"==typeof a?.subscribe&&"function"==typeof a.B;(()=>{let a=[],b,d=0;c.u={nb:e=>{a.push(b);b=e},end:()=>b=a.pop(),zb:e=>{if(b){if(!c.Vb(e))throw Error("Only subscribable things can act as dependencies");b.Jb.call(b.Kb,e,e.Fb||(e.Fb=++d))}},I(e,g,l){try{return a.push(b),b=void 0,e.apply(g,l||[])}finally{b=a.pop()}},ma:()=>
 b?.o.ma(),Ca:()=>b?.Ca,o:()=>b?.o}})();const A=Symbol("_latestValue");c.$=a=>{function b(){if(0<arguments.length)return b.Ba(b[A],arguments[0])&&(b.cb(),b[A]=arguments[0],b.valueHasMutated()),this;c.u.zb(b);return b[A]}b[A]=a;Object.defineProperty(b,"length",{get:()=>b[A]?.length});c.P.fn.init(b);return Object.setPrototypeOf(b,E)};var E={toJSON:function(){let a=this[A];return a?.toJSON?.()||a},ka:L,L(){return this[A]},valueHasMutated:function(){this.B(this[A],"spectate");this.B(this[A])},cb(){this.B(this[A],
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diff --git a/vendors/knockout/src/binding/expressionRewriting.js b/vendors/knockout/src/binding/expressionRewriting.js
index 549ae1980..8c4761983 100644
--- a/vendors/knockout/src/binding/expressionRewriting.js
+++ b/vendors/knockout/src/binding/expressionRewriting.js
@@ -45,9 +45,9 @@ ko.expressionRewriting = (() => {
         divisionLookBehind = /[\])"'A-Za-z0-9_$]+$/,
         keywordRegexLookBehind = {'in':1,'return':1,'typeof':1},
 
-        parseObjectLiteral = objectLiteralString => {
+        preProcessBindings = bindingsStringOrKeyValueArray => {
             // Trim leading and trailing spaces from the string
-            var str = ko.utils.stringTrim(objectLiteralString);
+            var str = ko.utils.stringTrim(bindingsStringOrKeyValueArray);
 
             // Trim braces '{' surrounding the whole object literal
             if (str.charCodeAt(0) === 123) str = str.slice(1, -1);
@@ -66,9 +66,10 @@ ko.expressionRewriting = (() => {
                     // A comma signals the end of a key/value pair if depth is zero
                     if (c === 44) { // ","
                         if (depth <= 0) {
-                            result.push((key && values.length)
-                                ? {key: key, value: values.join('')}
-                                : {'unknown': key || values.join('')});
+                            if (key && values.length) {
+                                // Values are wrapped in a function so that each value can be accessed independently
+                                result.push("'" + key + "':()=>(" + values.join('') + ")");
+                            }
                             key = depth = 0;
                             values = [];
                             continue;
@@ -109,34 +110,13 @@ ko.expressionRewriting = (() => {
                     throw Error("Unbalanced parentheses, braces, or brackets");
                 }
             }
-            return result;
-        },
 
-        preProcessBindings = (bindingsStringOrKeyValueArray) => {
+            result.push("'$data':()=>$data");
 
-            var resultStrings = [],
-//                propertyAccessorResultStrings = [],
-                keyValueArray = parseObjectLiteral(bindingsStringOrKeyValueArray),
-
-                processKeyValue = (key, val) => {
-                    // Values are wrapped in a function so that each value can be accessed independently
-                    val = 'function(){return ' + val + ' }';
-                    resultStrings.push("'" + key + "':" + val);
-                };
-
-            keyValueArray.forEach(keyValue =>
-                processKeyValue(keyValue.key || keyValue['unknown'], keyValue.value)
-            );
-/*
-            if (propertyAccessorResultStrings.length)
-                processKeyValue('_ko_property_writers', "{" + propertyAccessorResultStrings.join(",") + " }");
-*/
-            return resultStrings.join(",");
+            return result.join(",");
         };
 
     return {
-        parseObjectLiteral: parseObjectLiteral,
-
         preProcessBindings: preProcessBindings,
 
         keyValueArrayContainsKey: (keyValueArray, key) =>
@@ -154,8 +134,9 @@ ko.expressionRewriting = (() => {
         //                      it is !== existing value on that writable observable
         writeValueToProperty: (element, property, allBindings, key, value, checkIfDifferent) => {
             if (!property || !ko.isObservable(property)) {
-                throw Error(`"${key}" must be observable for ${element.outerHTML.replace(/>.+/,'>')}`);
-//                allBindings.get('_ko_property_writers')?.[key]?.(value);
+                console.error(`"${key}" should be observable in ${element.outerHTML.replace(/>.+/,'>')}`);
+//                ko.dataFor(element).key = value;
+                allBindings.get('$data')[key] = value;
             } else if (ko.isWriteableObservable(property) && (!checkIfDifferent || property.peek() !== value)) {
                 property(value);
             }