Rename data table column

Description: Rename a column in a data table. 
Assumptions: An optional 'myTable' data table type script parameter.

#Pick one of the following data table reference methods:
#myTable = Application.Document.Data.Tables['MyDataTable']        #Name method
#myTable = Application.Document.ActiveDataTableReference          #Active data table method
#myTable = Application.Document.Data.Tables.DefaultTableReference #Default data table method
#myTable as a data table type script parameter                    #Script parameter method

myColumn = myTable.Columns.Item["Date"]
myColumn.Name = "DateNew"