Reference property
TextBox.Reference — TextBox
A reference to the text box.
This property is a read-only property, meaning that no formula can be assigned to it.
Referencing text boxes from formulas
When referencing a text box from a formula, there is no need to write .Reference,Reference after the text box name if a reference is sought. As such, these formulas are often equivalent:
TextBox1TextBox1
TextBox1.ReferenceTextBox1,Reference