Perhaps keep this in your previous thread (Connect FBX File Morph Targets and Bones to dat.gui - #2 by donmccurdy), since it seems closely related and there is more context there about what you’re asking? In any case the code here does not provide enough information to help you — it doesn’t run by itself, so we can’t reproduce the problem. A live demo would be better.
Could this be a problem because the Morph-Targets and the Bones have the same numbers?
No, this won’t be a problem.