I've never nested subforms, but try
Code:
[Forms]![Main form name]![subformA control name].[Form]![subformB control name].[Form]![Label Name].Caption
where subform control name is the name of the control that contains the subform - it is not the subform name (although you might have allowed a wizard to have both objects with the same name, which is not a great idea).
If you're using this in vba, consider creating a control object and setting this syntax to it if you're going to use it more than once. Like
Dim ctl As Control
Set ctl = ......
ctl.Caption = rst!Description
Last edited by Micron; 02-28-2017 at 09:21 PM.
Reason: fixed code tags & additional info
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.