>I believe this question was asked for many times but I cannot find answers(((
>
>So, I need to update contents of menu popup just before it is activated. For example, I need to refresh most recently used files list when user select "Open Recent" in main menu.
>I don't want to update this popup every time new file is open - this is just wasting processor time. I want to update it when user ask for it.
>
>But with commands like ON BAR or ON PAD I just can activate popup but cannot refresh it. I tried to associate my procedure with ON BAR insted of ACTIVATE POPUP. But if I use ACTIVATE POPUP in my procedure then the popup appears separated from main menu.
>
>So the question is simple: Is it possible to do ON BAR ... ACTIVATE POPUP and update popup just before it is activated?

Not tested, but what if you put your updating function in SKIP FOR for Bar?
Something like:
ON BAR ..... ACTIVATE POPUP SKIP FOR MyFunction()
where your MyFunction() always returns .f. and do the changes in POPOUP?