Animation character with sequencer problem

Hi,
I have a problem. I do an animation for my character with sequencer. But when i put my animation in my blendspace, the Game don’t play correctly my animation if i uncheck loop in my animation blueprint. The animation play only the last frame, the last position of my animation. If i check loop in my animation blueprint, the animation play right but i don’t want loop my animation. Do you have and ideas to fix this?
Thank you et sorry for my english