Why character rotation doesnt work?

Hello,

i am rotationg character blueprint object using level blueprint.

It works when i run Simulate… but it doesnt work when i hit Play button. why?

The character i am rotating is attached on second screen. (it contains its camera etc…).

Thank you.

Bah!!

Finally i managed it, after like 4 hours :/.

Blueprint is like this:

And the Character properties are like this: