Mail Template scripts

Hello! 

1IM 8.1

I need get XDateInserted from Department view in Mail Template. 

I wrote script: 

Public Function CCC_Department_Get_XDateInserted_1(ByVal dbDepartment As ISingleDbObject) As String
            Dim strLOGFileName = "C:\temp\logs\temp.txt"


            Dim obj As String = dbDepartment.GetValue("XDateInserted").ToString()

            VID_Write2Log(strLOGFileName, String.Format("{0}, ==> Date: {1}", Now.ToString(), obj))

            Return obj

        End Function

But I catch empty string. 

In the Mail Teplate I wrote: $Script(CCC_Department_Get_XDateInserted_1)$

Any ideas?