Pilot Actor Blueprint for Cinematics

Hi,
I create an actor blueprint where i add a spring arm and a cine camera.
I create my cinematic, i add the camera cuts, i click on " + camera" and link my actor blueprint, then i convert it into spawnable.
Then i try to pilot my camera.
Whatever i do ( moving foward, left, right, backward) the camera moves backward for X seconds with random rotations.
For exemple, i press foward for 1 sec, my camera is going backward for 5-6 sec.

Please help ^^’
Sorry for my english, english isn’t my mother tongue.
Thnaks you all.