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Animation node: pose visible but ignored

I’ve written a plugin in c++. It adds new animation node in Persona. But I’ve got stuck with message ‘pose visible but ignored’ (RotateRootBone node). What is the reason of this message? (all nodes are connected)
v. 4.18

These functions are not called:
Update_AnyThread
Evaluate_AnyThread

The solution was very unobvios:

  1. Create output pin (override CreateOutputPins of UAnimGraphNode)
  2. Call EvaluateGraphExposedInputs.Execute(Context) (FAnimNode)

This is not mentioned in tutorials