How to add line feed in User Data Source ?

This line doesn't add a line feed even if I add many lines this way there's no line feed in the Extended Edit Text

What is the way to have text line this ?

Text1

Text2

Text3

and not like this

Text1Text2Text3

 _oDataSource.Item("UD_38").Value = _Notes.FirstOrDefault(n => n.TextCode == "FREIGHT").TextValue + Environment.NewLine;