[Closed] Is it possible to delete Named Selection of faces?

Is it possible to delete Named Selection of faces via Maxscript?
I can create, but how to delete?
This

selection[1].faces.selSetNames

shows all named selections –

#("","1","33","4")

This will delete the last element in the named selections

deleteItem selection[1].faces.selSetNames 4

Then, this

selection[1].faces.selSetNames

prints

#("","1","33")

but when I open the Edit Named Selections dialog the “4” is still there.