Can we know whether Cancel is clicked or Save is clicked?

Hi,

i'm using command app.executeMenuCommand("saveAs") to open saveAs dialog. if i click save button then i need to follow some steps but if cancel clicked then need to do something else so i'm unable to get which button is clicked. is there any way to move out of this issue.

Note: I don't want to save as the document with app.document[0].saveAs() method because this will not show save as options dialog.

please help is possible.

Thanks,

Upendra sengar.