How to Rename Multipage In userforms?

Hello Folks VBA Experts out here,

Im new here ,I hope everything is going fine.

I have some doubts

I tried simple method of caption

   Private Sub CommandButton Click()
   With TextBox20
   UserForm1.MultiPage1.Pages(0).Caption = .Text
   End With
   End Sub

After I re-named it , & clicked Save the userform1 its showing the same Old Name after clickling the userform1, is there any Solution that I can Re-Name my userform-multipages? So that it saves the new name of Multipages,and old one gets deleted, please let me know in the comments Section Below , I have attached a Jpg file for the reference , Please Share your idea friends.#Urgent Thanks & Regards