Hiding one bar number

I have used the neat workaround suggested some time ago in this forum to add an extra bar to fake a double thick barline. That works, but when I make a bar number change to compensate for the faked extra bar, it shows as visible, but in the middle of a system, where I do not want bar numbers.

I can’t find any way to make that individual bar number hidden. Is there a way?

Look in the properties panel. You may have to be in engrave mode.