How to Pause nested movie clips with AS2 code

Hi, im a full newbie in AS2. i need to have a pause and resume button in my tower defense game but i cant find any solutions online. pls pls do help me our thesis defense is on monday and were still lacking on some functions.

situation i want to pause all the nested movie clips in my frame (all my movie clips is on 1 frame only)…

ps. do i need to pause my fla. ?