I'll assume you're referring to a mouse gesture, I.E. moving it across a certain distance, rather than directly to a certain position.
This is not(yet) possible in VoiceAttack as far as I'm aware.
Even "Adjust the Mouse Cursor Location" will get the current position, add X pixels to it, then "teleport" to that absolute location, which does not count as a move in the way a gesture would require.
Perhaps this could be moved to
Feature Requests. I've also had a need for this in the past, I will say.