How many morph targets? And how many "degrees" of change are needed for a style? If you can only use four out of nine add-ons at a time, t he formula would, IIRC, be: 9x8x7x6 possible variations (unless an add-on can be used multiply, then IIRC, it would just be 9^4 variations), but it's been a long time since I had math and statistics classes - and that does NOT take into effect morph target changes.