Make that last line I posted this:
'Copy from a variable to a textbox on a form.
Forms!FormName.txtBox1.Value = str1
I was of course testing the forum with my original line.
Also, re-reading Tony's first sentence, I'm wondering what exactly he's asking. Maybe this...
Forms!FormName.TxtBox1.Value = Forms!FormName.TxtBox1.Name
Or more like Mile's example?
Dim MyString As String
MyString = "TxtBox1"
Me.Controls(MyString) = "whatever"