How to scale a bone without affecting it's children?

  1. create a control rig BP(Blueprint) and an AnimInterface BP

  2. In ABP Anim Graph create a control rig node and set the CRBP which just created, then connect the input pose and output

  3. In CRBP, create “Set Transform - Bone” node, and most important thing is, uncheck the property “Propagate to Children” !!!

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