Kirupakaran, you can do the sum() for a group of text value. It's the same with "A"+"B" + .... = ?. If you want to check whether the current calculated value is numeric or text. Right click on your List box of PRICE, see the alignment, by default, the text is on the left of list box, the numeric is on the right of list box. Always remember to transfer to num when calculating aggregation.
