Ok as far as i know that doesnt work heres the code for the button that opens up (frmSell)
Private Sub cmdSell_Click()
Dim SearchStr2 As String
SearchStr2 = "[BikeID] = " & Forms![frmBikes]![frmSubBikes].Form![BikeID]
DoCmd.OpenForm "frmSubSell", , , stLinkCriteria, , acDialog...