gotoAndPlay with movie clips

All,
I have some sendAndLoad code which works good. Instead of outputting something to a text box I’d like to go to a different place in my movie. I’ve got quite a few embedded movie clips and the path is the following:

pages_all -> action sc copy 12 -> action content copy 13. Within the pages_all movie clip I’d like to go to frame number 13. How can I use the gotoAndPlay function to go to another movie clip.

I did try the following:

this._parent.gotoAndPlay(13)

That didn’t work however, any ideas? Thank you for the help.