Focus stacking- can this be used to create a pull focus effect?

[eco_bach1]

So much to learn about ML. Just installed on my 5D2, and it feels as though I have a new camera.
Just read about focus stacking. Can someone tell me if it's possible to do a smooth pull focus using this feature?

[he56ys5ysu7w4]

Is this what you're after?

Details on rack focus in the manual.

[stillstonevisions]

The video is interesting, but on my 60D, when I set the endpoint in ML, then go to Liveview and attempt to use the -+ buttons, in an attempt to focus as you are doing, it does not focus, but just magnifies the viewfinder image. 

I also attempted to use the PLAY and Q button to do fine focusing as illustrated, but they do not have the desired effect at all, but just their normal Canon functions. 

Any ideas why ML is not working for me?