Forums Scripts & Popups changing the text of a button in a dialog

Can anyone tell me if theres a way to change the name of a button in a dialog when it's clicked. It is set to a %variable and when its sclicked, it changes the variable, how can I set it to show this change on the button, I would prefer not closing/re-opening the dialog.

/Help /did
/did -a <dialog> <id> <text>

Thanks a lot Lowest, I thought that only worked for list/edit boxes, you're a star