Can Someone Correct my Error

[mkkashif]

i have a combobox cbo which i use for search items in subform from main form invoice.
where i am wrong.
MY Question is
i am trying this but it gives us a message that the property is not for this object.
where i am wrong.
i give you some detail.i have main form invoice.
main form name is invoice
subform name is vitemtab.
combobox name is cbo
in subform the controlfield name is vcode1.which to look
"""""""""""""""Code"""""""""""""""""""""""""""

With Me!vitemtab.vcode1.Form.RecordsetClone
.FindFirst "vcode1 = " & cbo

If .NoMAtch Then
msgbox "no records"
Else
Me!vitemtab.vcode1.Form.Bookmark = .Bookmark
End If
End With
need help to create