How do I change the physics asset contraint joint name?

[Bibbit]

1. Copy the constraint using the option “Copy Selected Bodies/Constraints to Clipboard”.
   
   
2. Paste the results to a notepad

Begin Object Class=/Script/Engine.PhysicsConstraintTemplate Name="PhysicsConstraintTemplate_32" ExportPath="/Script/Engine.PhysicsConstraintTemplate'/Game/Characters/Hero/Mesh/SK_Hero_01_PhysicsAsset.SK_Hero_01_PhysicsAsset:PhysicsConstraintTemplate_32'"
   DefaultInstance=(JointName="UserConstraint_0",ConstraintBone1="spine_02",ConstraintBone2="spine_01",Pos2=(X=0.000000,Y=0.839514,Z=5.716620))
End Object

3. Change the JointName to the name you want to use (e.g. "spine_02")
4. Copy the modified text
5. “Delete” the constraint
6. “Paste Bodies/Constrains From Clipboard”