Cast to animation bluerpint in Animation Modifier BP always fail

hi, i use anim modifier bluerpint class for automaticly add curves to animation sequences. Aslo i need get all curve list from anim instance. But i cant propertly cast to animation blueprint, resuilt always “fail”, aslo creating variable with animBP type doesnt help (call function “get all curve names” gets zero-lenght array). how posseble propertly get data from other blueprints in animation modifier BP? Or now is unssupported yet? Sorry for my English.

Can you please post a screenshot of the part of your blueprint that is not working as you expect? It would make recreating and therefore testing your problem easier.

If i try get all curve list in Anim Bp, print string gets 78 array lenght. But if i try get same thing from Anim Modifier Bp, i get null values from all. More info about anim modifiers -Animation Modifiers | Unreal Engine Documentation