Call a Textbox using a variable

Hello,

I have a small issue with VBA. I want to share a variable between two UserForms so I can reuse this variable in a command (I think this is where the problem lies). To summarize, in my first UserForm I have several textboxes intended to hold dates, my second UserForm is a calendar where we choose the date and re-implant it into the first UserForm. So far so good, the problem is that for my current macro to work, I need a calendar UserForm for each textbox intended to hold a date since I specify the name of my textbox in the calendar UserForm. I would therefore like to create a variable so as not to multiply calendar UserForms (I have 10 textboxes that can hold dates).

Here is what I did:

In a module I declared my variable
Public date2 As Date Public CaseDate As String

In my first UserForm I created a button next to each textbox that can hold a date on this model:
Sub Calendar1_Click() CaseDate = Echeance1 'name of my textbox Calendar1.Show vbModeless End Sub

And finally on my calendar UserForm, I choose to re-implant the selected date:
'Traitement.Echeance1.value = date2' this works but I must thus create a calendar UserForm for each textbox name
Traitement.CaseDate.Value = date2 'This does not work (it looks for something named CaseDate on my UserForm directly) but it would allow me to manage everything with the same calendar.
Traitement.Show vbModeless
Unload Me

I’m sorry, I’m probably doing this very badly...
Thanks in advance for your help.