HI:
I made a TouchOSC file for iPad VDMX with 4 pages for three layers.
Page1: Trigger Clip & Opacity Layers
Page2: Composition Mode & Source Layer
Page 3: Layer FX
Page 4: Sequencer (for Index and Number)
You can download the file here:
https://www.box.com/s/026bb7993a3a062efa64
Greetins!!!
Joseph