Blend poses by bool

I am having some issues trying to blend poses from a bool called from the character. As in it won’t let me. I initially creating a bool variable in the animation blueprint, then tried the blueprint interface but I only get errors that way. I know it is possible but I don’t know how. Basically I want the character to switch to a boxing stance when he is locked onto by an enemy. The lock on function and variables are within the character itself.

Ok, I was able to use Try Get Pawn Owner -> Cast To Character -> to get the variable but now I get a warning that Try get Pawn Owner is an unsafe thread call. Not sure what that means. The animation is now firing though.