Table not found

Hi

  I have written this code but is giving error Table not found though it exists

oItem = oForm.Items.Add("txtcbo", SAPbouiCOM.BoFormItemTypes.it_COMBO_BOX)

                    oItem.Height = oForm.Items.Item("14").Height

                    oItem.Top = oForm.Items.Item("14").Top + 35

                    oItem.Left = oForm.Items.Item("14").Left

                    oItem.Width = oForm.Items.Item("14").Width

                    oItem.Visible = True

                    oItem.Enabled = True

                    'oItem.LinkTo = "lbltr"

                    ocombo = ((oItem.Specific))

                    ocombo.DataBind.SetBound(True, "@ABC", "Code")

Thanks