How to set my root bone location in animation blueprint?(2 questions)

Hi :smiling_face_with_three_hearts:,
My animation rootbone isn’t at the right location, I want to change it’s location in Animation Blueprint (I know this can be done in DCC but sorry I don’t know how to use it).
As you can see my character was outside the Axis


The problem caused by error in Skeleton Tree. You can see that my root_M isn’t set to default location (0,0,0)

Moreover, Is there a way to lock my Root_M in Z Axis so that my character won’t move up and down?
Thanks a Lot :kissing_heart: