I just found a pointer in memory to the value that used by H5. In fact it was lucky because value don't overwrote in every frame otherwise I need to find and intercept function where I can overwrite overwriting . In case of skin layers definitely it will be harder.
The hardest thing was find sliders' values. While I was looking for them, I also found a place where values of sliders for each frame are stored. This is an interesting find, because in theory it allows to do something like quickly move/scale animations. In general, reverse engineering is a pretty funny thing. While looking for something you can find completely unexpected things. For example, I am currently working on a modification of old strategy, where I lucky discovered a function that bakes (when loading map) static lighting from light sources placed in the map editor. So I intercepted this function and now I call it every frame if the position of some light has changed. That is, I actually added dynamic lighting without using the graphics library.