How to use PivotPainter2

How to use PivotPainter2 in 3DMAX?

C:\Program Files\Epic Games\UE_5.8\Engine\Extras\3dsMaxScripts

PivotPainter2.ms

Just toss it into the 3dsmax UI by mouse.

But in my case was 3dsmax 2027. And it has serious bug which can’t export hierarchy as texture alpha channel.