Command /b skin build and /skin all do not work

Hello,
command /bskin build and /bskin all doesn't work for me. It always changes only one structure for me, the one that I use a hammer to select material on.
The /bskin command works 95%, sometimes it happens that the skin is not updated and remains in between one and the other variant.
I have the Enhanced Hammer plugin installed, but I've also tried uninstalling it to see if it interferes in any way. How do I select the view before the command, only enter the material with the hammer? Or am I doing something wrong?

Thanks

read the documentation.

Hello,
I got it wrong. I built a wood house and wanted to update the house to iron with a new look after the hammer plugin and the /bskin build command.
The house must already be iron, and then you activate the container appearance with the command.

The plugin works, good job