Modify in Userform using a variable in a function

Hey guys,

I have N userforms with variable names with X textboxes within.
I want to create a function to call to do something to the userform with the name i desire / from where it has been called in a module.


something like do_this (name_of_the_form, text_inserted_in_textbox, what_text_box)

The problem is that i can't find a way to do something to a userform with a variable name. I've tried to search for it as object, error, declare it as string again resulted in an error.

how i can reference to a Userform From String ? or something