I have one file which working perfectly. I need little change in that - in WB there is two sheets Data & Chart. in chart sheet it shows chart of sheet Data. there is 2 more lines which represent moving average of two different time frame ....I need 2 buttons in chart sheet it self which add up or minus values 1 from cell G1 and H1...so those lines accordingly change in chart...just like line scrolls buttons which is there in existing chart sheet. and if possible in chart window theses names changes accordingly as in current situation I see Line 10 and Line 20 in chart window so if we change values via button these names accordingly change ...say we set to 15 and 30 via buttons then Line 15 and Line30.