how do i assign values of 2 or more fields in vbscript closed fields?

Hi thanks all for the tips. The code worked when changing to the following:

Function CustomerInformation_OnLoad()

if (SystemVariables.CodeObject.Company = "D" or SystemVariables.CodeObject.Company = "T")then
    if CustomerInformation.CodeObject.Customer = "AAE02" then
    CustomerInformation.CodeObject.Carrier = "Customer collects"
    CustomerInformation.CodeObject.CarrierURN = "AA Driver"
    end if
end if
End Function

Thanks again for the tips.