There no boolean that determines if it appends or not. It works perfectly for me on WinXP, Office XP and LV6.02. If you are using an older version like Office 97, you will need to change the Range->Value2 to Range->Value in the Set Cell Value.vi, otherwise no new data will be appended.
Open up the Excel Get Used Range.vi before running the main vi and check what number is returned for Used Rows. This number needs to be the last row used by the original data. This number is added to the loop index to increment the row address, starting at the last location +1. If you are getting Used Rows = 1, there is something wrong with how you select the sheet or something odd in how the data is organized. Are you appending into hidden rows? Michael
