Hi Dennis,
Thanks for creating the JSBin! I see that works well because you bind the call sheet to the model directly. My example binds to the view which contains the ActionSheet.
Do you know why I have to do the following:
oCallSheet.bindAggregation("buttons", "/value/" + sID + "/icl_phone_number", oCallButton);
and why this doesn't work?
oCallSheet.bindAggregation("buttons", "icl_phone_number", oCallButton);