Creation of User Defined Fields

Question

Hi all,
i'm developing an add-on on SAP B! and i need to create some user fields.
I've seen that if I create a user field from SAP menu, on document rows, the field is replicated on several table on the DB (watching CUFD table).
If i create the user fields from SDK, using the UserFieldMD object, do i have to specify each table where the field must be created, or there's a way to simulete the beahviour of SAP menu option?
Thanks in advance.
Nick

Answer 1

Thanks Again, GIanluigi, i try to be more explicit.
Let's say that my addon uses the user field U_MYFIELD, so before i start using my addon i have to create this UDF at installation time. The Code i write to create this field is the following:
        ' Sample User Field
        oUserFieldsMD.TableName = "OWHS"
        oUserFieldsMD.Name = "U_MYFIELD"
        oUserFieldsMD.Description = "Sample Field"
        oUserFieldsMD.Type = SAPbobsCOM.BoFieldTypes.db_Alpha
        oUserFieldsMD.EditSize = 2
        '// Adding the Field to the Table
        lRetCode = oUserFieldsMD.Add
        '// Check for errors
        If lRetCode <> 0 Then
            oCompany.GetLastError(lRetCode, sErrMsg)
            If InStr(sErrMsg, "Error Creating Field") = 0 Then
                MsgBox(sErrMsg)
            End If
        End If
So my qustion is: do i have to write code on my addon to call this while installing? Or the B1DE provide this functionality for me?
I can't understand where's the panel you're talking about on B1DE, the first panel of my wizard is a panel where it asks me the path of exe file and the path of uiapi and diapi.