p:lightBox and dynamic generated File

[rippal]

hello there!

i have a problem with the following p:lightBox (in combination with a p:dataTable)

Code: Select all

<p:lightBox iframe="true" width="60%" height="95%"
	overlayClose="false" id="lightBox" widgetVar="lightBox">
	<h:outputLink value="#{request.contextPath}/forms/test.xhtml"
		title="Form">
		<p:commandButton value="Fill" ajax="true"
			action="#{Generator.generateForm}">
			<f:setPropertyActionListener value="#{form}"
				target="#{Generator.selectedForm}" />
		</p:commandButton>
	</h:outputLink>
</p:lightBox>

when i press the Fill-Button generateForm() is called... this generates a dynamic .xhtml-File on the server which is then available under the given path "#{request.contextPath}/forms/test.xhtml"
i want to show this dynamic generated file in the lightBox!

first time i open the lightbox the page could not be found... second time the page is shown..
i think that the lightBox opens before the .xhtml-File is generated... so what can I do to wait until the generateForm()-Function is finished? is this possible?
oncomplete or something else?

thank you very much for your help