ui:param value accessible in backing bean?

[Michael Heinen]

Is it possible to access the value of a facelets ui:param tag in phase 
render response in a backing bean?
I tried to resolve #{activeTab} in MyController.getOnlick() without success.
Sample:
1) Template
<ui:composition template="templates/main.xhtml">
<ui:param name="activeTab" value="blabla"/>

<ui:define name="navigation">
<ui:include src="/facelets/navigation.xhtml"></ui:include>
</ui:define>


2) navigation.xhtml
...
<t:commandLink onclick="#{MyController.onlick}"
...

I use myFaces 1.2.9 and facelets 1.1.15.

Thanks,
Michael