here's one way.
First state should have a {touch event}action.
(Waits for finger to be placed on screen)
Second state should have a {Get mouse delta position} action
This action calculates how far from the original touch point you have dragged.
Create a variable for the delta x and a variable for the delta y.
Now in the same state create a {translate} action
Now simply drive the x translate and y translate with your variables from the delta mouse position.
you may want to put each variable through a float multiply depending on your situation.
Finally in the same state, create a {mouse button up} action for when you lift your finger,and send it back to state 1, ready for more input.
The getmousedeltaposition action can be found on the ecosystem.
I hope that gets you by, if it's not working for you then i may have forgotten something, as i had this very issue for the last few days, but since , i got it working perfectly with several prototypes. I can send screenshots etc if you are still stuck.
The answers to this problem are indeed on the playmaker forum, but it's a little scattered and tricky to find.
Jason