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    <p>You're basically abusing the <code>valueChangeListener</code> here. You're not exactly interested in the value change (i.e. you aren't interested in <strong>both</strong> the old and new value), you're only interested in the submitted value. This was tolerated in JSF 1.x when you didn't/can't/won't use an ajax based component library. There are (rather complicated) ways to fix your particular problem with the <code>valueChangeListener</code>, but in JSF 2.x, which ships with builtin ajax capabilities, this really can't be done that way anymore. You should rather use the <code>&lt;f:ajax&gt;</code> tag to introduce asynchronous submits and partial updates.</p> <p>Rewrite your view as follows:</p> <pre class="lang-html prettyprint-override"><code>Formula name: &lt;h:inputText value="#{output.formulaName}" id="formulaName" /&gt; &lt;br/&gt;&lt;br/&gt; The formula so far: &lt;h:inputTextarea id="formula" value="#{output.propertyReferenceValue}#{output.property2ReferenceValue}"&gt;&lt;/h:inputTextarea&gt; &lt;br/&gt;&lt;br/&gt; Property1: &lt;h:selectOneMenu value="#{output.propertyReferenceValue}" id="selectTwo"&gt; &lt;f:selectItems value="#{property.propertyReference}"/&gt; &lt;f:ajax render="formula" /&gt; &lt;/h:selectOneMenu&gt; &lt;br/&gt;&lt;br/&gt; Property2: &lt;h:selectOneMenu value ="#{output.property2ReferenceValue}" id="selectThree"&gt; &lt;f:selectItems value="#{property2.property2Refference}" /&gt; &lt;f:ajax render="formula" /&gt; &lt;/h:selectOneMenu&gt; </code></pre> <p>That's all. Your <code>#{output}</code> bean should be put in the view scope by <code>@ViewScoped</code>. No addidional listener methods are necessary. Only if you ever want to manipulate the values before displaying it, then you need an ajax listener. E.g.</p> <pre class="lang-html prettyprint-override"><code>Formula name: &lt;h:inputText value="#{output.formulaName}" id="formulaName" /&gt; &lt;br/&gt;&lt;br/&gt; The formula so far: &lt;h:inputTextarea id="formula" value="#{output.formula}"&gt;&lt;/h:inputTextarea&gt; &lt;br/&gt;&lt;br/&gt; Property1: &lt;h:selectOneMenu value="#{output.propertyReferenceValue}" id="selectTwo"&gt; &lt;f:selectItems value="#{property.propertyReference}"/&gt; &lt;f:ajax listener="#{output.calculateFormula}" render="formula" /&gt; &lt;/h:selectOneMenu&gt; &lt;br/&gt;&lt;br/&gt; Property2: &lt;h:selectOneMenu value ="#{output.property2ReferenceValue}" id="selectThree"&gt; &lt;f:selectItems value="#{property2.property2Refference}" /&gt; &lt;f:ajax listener="#{output.calculateFormula}" render="formula" /&gt; &lt;/h:selectOneMenu&gt; </code></pre> <p>with e.g. (this kickoff example does a simple concatenation on comma, you've however the full freedom to build the <code>formula</code> value the way you want):</p> <pre><code>public void calculateFormula() { formula = propertyReferenceValue + ", " + property2ReferenceValue; } </code></pre>
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    1. COThank you very much for the help. First thing tomorrow I will make the necessary changes. Since this is the second JSF issue you've helped me on, could you recommned any good reading material/tutorials related to JSF 2.0? I've been doing every tutorial i can get my hands on (as well as reading through other people's JSF related issues), but those are mostly easy ones. Probably the one i got the most out of was http://www.mkyong.com/tutorials/jsf-2-0-tutorials/. Anyway, thanks again.
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    2. COMkyong.com is a good resource. But those articles are pretty high level and only shows *how* to approach X, not the *why*. Perhaps you will find my last blog article useful: http://balusc.blogspot.com/2011/09/communication-in-jsf-20.html
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    3. COThanks again, I will read the blog the first chance I get.
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