Reference
You can call a procedure in a module associated with a subform or subreport in one of two ways. If the form containing the subform is open in Form view, you can refer to the procedure as a method on the subform.
The following example shows how to call the procedure GetProductID in the Orders subform, which is bound to a subform control on the Orders form:
In the Orders Subform class module, enter this code:
“vb“
Public Function GetProductID() As Variant
' Return current productID.
GetProductID = ProductID
End Function
The following code illustrates how to call the GetProductID procedure.
“vb“
Forms!Orders![Orders Subform].Form.GetProductID
!include[Support and feedback]