When I use the following lines, it works perfectly
With Forms![frmvandaag]![subfrmbijzzovandaag].Form
Me.Artikel = .Artikel
Me.Op_zicht_van = .[Op zicht van]
Me.Op_zicht_tot = .[Op zicht tot]
etc.
but..
When I use this code, i get an error that the form cannot be found...