Failed to send Variable to AmimBP

Hello, i tried it now for about 3 days… and i used google a lot of times, but i couldnt found a solution. I try to make a FPS Game i have to Meshes in my Character the Owner vision and die 3rd person. Walking animation works fine on the TrdPerson but i cant jump our crouch. When ich check crouch in ne FpcBP the 3rd person mesh is crouch, but it dosent work with pressing C. Can someone help me?