problem while saving taskform varibles

[gsccnu]

this is my *.xhtml

xmlns:t="http://myfaces.apache.org/tomahawk"
......................
<ga:responseActions>
 <id:listUsers target="#{users}" />
</ga:responseActions>
<h:selectOneMenu required="true" value="#{var['collection1']}">
 <t:selectItems value="#{users}" var="user" itemLabel="#{user.name}" itemValue="#{user.name}" />
 </h:selectOneMenu>

When i examine this task,every things is fine. But when I put down "Save",i get exceptions.

javax.el.PropertyNotFoundException: /50/assignA.xhtml @33,83 value="#{var['collection1']}": Target Unreachable, identifier 'var' resolved to null
 com.sun.facelets.el.TagValueExpression.getType(TagValueExpression.java:62)
 com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getConvertedValue(HtmlBasicInputRenderer.java:81)
 com.sun.faces.renderkit.html_basic.MenuRenderer.convertSelectOneValue(MenuRenderer.java:166)
 com.sun.faces.renderkit.html_basic.MenuRenderer.getConvertedValue(MenuRenderer.java:328)
 javax.faces.component.UIInput.getConvertedValue(UIInput.java:936)
 javax.faces.component.UIInput.validate(UIInput.java:861)
 javax.faces.component.UIInput.executeValidate(UIInput.java:1071)
 javax.faces.component.UIInput.processValidators(UIInput.java:663)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIForm.processValidators(UIForm.java:229)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
 javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:662)
 com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:100)
 com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
 com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
 javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
 org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:147)

Thanks in advance

[gsccnu]

I can use selectItem,but selectItems have something wrong.

Anyone has any ideas?

[kukeltje]

???? The error is in selectOneMenu..... not selectItems. The error says the var variable is null. So I would look there