Hey Thumper,
To reference your AnimBP from another Blueprint, you’ll need to call the Mesh being used on the Character or Pawn in question, then get that Mesh’s Anim Instance, and Cast it back to the AnimBP you are using. That will let you get/set variables in that instance of your AnimBP. Here are some examples of what that node setup would look like:
Edit: This example is based on the Third Person (Blueprint) Template
From a Character Blueprint:
From a Level Blueprint:
If you have any questions about this setup, please let us know!
Cheers,
-Steve