Player Blueprint doesn't communicate with Animation Blueprint

Hi, I recently updated UE4 to 4.12.5, so now I realized after I tried various times, creating the project from the top. As the Print string saied, the bool variable “PickedUp” is true, then the Animation Blueprint should play "SShotgun_DrawAnim but it doesn’t.
The animation bluerprint play only the first animation on entry.

I did the transition and there aren’t errors or warnings.

Note: As I saied, this appened with the newest update I installed (4.12.5), but before this version, the other projects animation blueprints worked, and I know it because after this strange fact, I tried to test the older project too.

Some help?
Thanks.