Integrating Leap Motion and the Crumple Mesh procedural example

Hi. I'm working on a project that requires the users to interact with a mesh in real time. The main idea would be for them to control, with hand gestures, the scale parameter of the noise found in the CrumpleMesh example. For instance: If hand moves left or back, the scale comes down to 0.5; if hands moves front or right, scale goes up to an arbitrary number, say 25.

I really don't know where to start, especially since I have pretty much zero scripting experience, but I can certainly try my best to figure out whatever ideas you may throw at me. Any advice? Thank you so very much in advance.