I am new to mel script just finding my feet but I think what you are looking for is geometryConstraint I have tried to wright script but only works for the first one selected string $mySelection[] = `ls -sl`; delete `geometryConstraint -weight 1 $mySelection[0] $mySelection[1]`; This is suppost to work that the first one selected is the ground then select all others that you want to move to it then it deletes the constraint hope you can make some thing of this.......dave