Hi Sarath,
You can declare range variable for a column from Workbook or Excel window.
I assume the Excel window is "Book2" in the Origin project. You can open the Set Column Value dialog in another workbook and enter this script to the Before Formula Script panel to call the column.
range aa=[book2]sheet1!1;
//Book2(excel book) sheet1 column1
Thanks
Jacqueline
OriginLab