how to rename block inside the block

[dinarele]

Hi, all,
does anyone know how to rename the block inside the other block without exploding the first one?
Thanks

[NBC]

type RENAME, select Blocks, then the name of the block you wish to rename; and finally put the new name in.

[dinarele]

And I was opening block editor, that's why it didn't let me rename it:) thanks:)