gotoAndPlay in parent movie?

I just can’t figure out how to set the path here, I have a button in an external .swf that is loaded into my main movie, I want the button to move the main movie timeline to a frame that I have labeled “tools”

on (release) {
gotoAndPlay("_root.tools");
}

that doesn’t work, I’ve also tried _parent, with and without quotation marks

thanks in advance for any advice