SetMember
[object] → [targetPath]

Adobe documentation

ActionTargetPath

If the object in the stack is of type MovieClip, the object’s target path is pushed on the stack in dot notation. If the object is not a MovieClip, the result is undefined rather than the movie clip target path.

FieldTypeComment
ActionTargetPathACTIONRECORDHEADERActionCode = 0x45

ActionTargetPath does the following:

  1. Pops the object off the stack.
  2. Pushes the target path onto the stack.