Changing list time using List pallette.

I have a problem when I'd like to change an List time.
My idea is to create several macros with different time (cue 1 time 0 Enter), than when i select a list using guard i just click my macro and magic happen. Unfortunately I have to type List #, because If I select list from pallette command line is in Red.
Am I doing something wrong or it's a bug?