I have the following code in the control source however I am getting the #Error.
RegistrationNumber in tblVehicles is a text field.
The field on the form is a simple textbox
Code:
=DLookUp("[MileageRate]","tblVehicles","[RegistrationNumber] = " & [Forms]![frmCalculator]![txtRegNumber])
RegistrationNumber in tblVehicles is a text field.
The field on the form is a simple textbox