I tried this
DoCmd.OpenForm "frmVehicleMaintenance", , , "txtbox_VehicleId" = " & [Forms]![frmInventoryMain]![txtborx_VehicleId] &" '"
and this
'DoCmd.OpenForm "frmVehicleMaintenance", , , "VehicleId" = " & me.txtborx_VehicleId "
The 2nd form now shows up but there is no data. Any...