How to rewind main timeline from MC

Hi everyone,

I have an external swf that I loaded into level 5. In this swf I have a MC (a button in the mc) that I want onPress or onRelease have the main timeline of the swf not the MC, rewind to frame 1 and then unload level 5.

For the life of me I can’t fugure this out. Can anyone point me in the right direction?

Thank you for your time and efforts.