Subform visibility

Hello,

I have a main form (Main_Menu) and 2 sub forms (Main_DLMP and Main_DeptView). In the main menu I have 2 labels that act as menu.  I have click events on both these labels.  I want to make one visible, and the other not visible.  But I struggling with this.  These are the 2 events I have for each of the labels in my main form.

 This is the event on the first label. As default Main_DLMP visibility is set to True and DLMP_DeptView is set to False.
    Forms![Main_Menu].[Main_DLMP].SetFocus
    Forms![Main_Menu]![Main_DLMP].Form.Visible = True
    Forms![Main_Menu]![Main_DeptView].Form.Visible = False

This is the event on the second lablel
    Forms![Main_Menu].[Main_DeptView].SetFocus
    Forms![Main_Menu]![Main_DeptView].Form.Visible = True
    Forms![Main_Menu]![Main_DLMP].Form.Visible = False
   
I am getting an error on the second label... Cannot set focus.