Referencing a control on an Access form is easy. Referencing a subform and its controls is a little more complex. To Access, a subform isn't a form at all, but a control, so you must reference it as ...

Use the **LinkMasterFields** property (along with the **LinkChildFields** property) to specify how Microsoft Access links records in a form or report to records in a subform, subreport, or embedded ...

Use the Name property to specify or determine the string expression that identifies the name of an object. Read/write String. A valid name must conform to the standard naming conventions for Microsoft ...