you'll have to be a lot clearer on what you're trying to do in order for anyone to really provide you assistance.
It can be done using the following command:-top.getDCFrame(self).postSettingsForm("opener.top._dcWin.datacapture_buttonframe.settings Callback");
As I mentioned in another thread - this code, though it works now, is completely unsupported and could break (without notice) at some point down the road when you upgrade.