What is the use of Levels entered when executing "Break Level Instance"?

"When executing “Break Level Instance”, the Levels field has a default value of 1.
What is the purpose of this entry?

I don’t know how to use it, since Break is executed even if a value other than 1 is entered.

I’m posting this now that I know why.

It seems to be used to batch split a level instance by raising the number of split levels when there are level instances within a level instance.

When the value was 1, only the selected level instance was split, but when the
When I set the value to 2, I confirmed that level instances within a level instance are also split.