the flipbook doesn't animate

Hi, I just started learning UE5. I decided to my first project it will be 3D sidescroller with 2D sprites, but i have problem that flipbook doesnt animate. I create FlipbookComponent set a variable paperflipbook and set this variable as idle flipbook animation in my blueprint character and it doesnt animate. I set source flipbook too. When i drag flipbook directly to my level its animate, but in character it doesnt.

I already fixed this. UE5 is just buged. I create new class and copy/paste all my previous code to this new class and it just works now.