Buttons in side Movieclip

Hello Everyone…

I have a movie clip “prog_ris” with the instance name “cont_prog1_mc”. Inside this movie clip I have a button “prog_ris_btn1” with instance name “prog_ris_btn1”.
When I click on the button I want it to go to a new scene called “partners”

So far I have done only buttons directly on the scene and I normally use something like this:

on (release) {
gotoAndStop(“partners”, 1);
}

But with the Movieclip it doesn’t work… What should I do now? Using AS2.

Thank you.