Changing the text in a button (print-function)

Hello,

I have defined a print-function for a button-panel and I would like to change displayed text when a selection is made in a tree-view.  The tree-view has a selection-callback where I call capi:redisplay-interface, unfortunately the latter does not seems to trigger the print-function of the button-panel.

How can I do this?
Is it possible?


Best,
Cam