My question about AI Movement in C++

Hi ;
I have a AI-Pawn in my game, and it’s DefaultLandMovementMode = MOVE_Flying.

I would like to move this pawn but by applying a force , not MoveToLocation() function .

I set AddMovementInput(FVector(0, 0, 100), 1.0f, true) , but not works.

Thanks for helping.
MSD.