Looping frames 6 through 7 infinite

I have a movie clip named “services_mc” it has 7 frames inside of it. When the movie clip gets to frame 7 I want it to go to frame 6 and play (and repeat this infinite).

I thought all I would have to do is put this in frame 7:


but it stops on frame 7.

Whats up with that?:b: