Following my first question, I have one more problem to solve: Sales datas are stored in Sheet1 & Sheet2. In Sheet3 invoice is prepared and it will fill data while I click in any voucher number in the first column of sheet1. I want to get invoice details of sheet2 also into sheet3. How can I use variable name of sheet reference in vlookup formula? (=vlookup(a3,'[sheet]sheet1'!a2:j100,2)