Prevent Blend Pose by Bool from changing after it started playing an animation

Hi !
I currently have an issue with animation transition in Blueprint.
I have a jump animation state that contain a Blend pose by Bool to determine if i should play the land animation as LandIdle or LandRunning.
This Bool use the horizontal speed of the character.
I notice that it’s possible for the Blend pose by Bool to switch from LandIdle or LandRunning even after one of them started playing, making some weird frames in the animation.

Is there any way to force the Blend Pose by Bool to NOT change back after a choice has been made ?

thanks