F:invokeUrl jsp tag and child objects

Hey all,
Does anyone know if its possible to use the f:invokeUrl tag on a method in a child object? eg:
<f:invokeUrl var="myObject.myChildObject" methodName="myMethod" />
I've also tried:
<f:invokeUrl var="${myObject.myChildObject}" methodName="myMethod" />
with no luck. I've gotten the above to work using the f:invoke jsp tag.
What I'm trying to do is put my ajax type functions in the objects that make the most sense. If I can't get this to work, I'll need to make presentation objects with all my ajax functions, create an instance and put it into scope, which I rather not do.
Thanks,
Graham

Graham,
I can't say if it will work or not, because its a better practice to leave all logic outside of the jsp (and I really don't know!). Do the logic in an activity, then only use the jsp to display the values. Keeping the logic outside is a much easier way to keep track of the data, and also re-use if necessary.
Customarily, a 'view' object is created. FileStatusView for example, would be a BPM Object that contains all the values to be displayed in a JSP or presentation.
Hope thats helpful!
-Kevin

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