I am very new to access and VBA so please excuse the idiocracy of the question, but, I'm trying to output a string to a bound textbox in a form based on the value of a calculated textbox. So here's what I have so far, and it works in that if I say debug.print it prints to the immediate box but it won't output to the textbox in the form.

Code:
Private Sub LowReg_Click()

Dim output As String
Dim ctlLowReg As Control
...