Extracting "downloadChart" to chart01.bin Extracting "installChart" to chart02.bin Extracting "rollbackChart" to chart03.bin Extracting "soakChart" to chart04.bin ================================================== Add the following near the start of your program. Change variable name $worksheet if required. $worksheet->store_formula("=download!A1"); $worksheet->store_formula("=install!A1"); $worksheet->store_formula("=soak!A1"); $worksheet->store_formula("=rollback!A1"); I then rename chart01.bin to downloadChart.bin chart02.bin to installChart.bin chart03.bin to rollbackChart.bin chart04.bin to soakChart.bin I reference them in my perl program using these new names. My problem is that the soak data is ending up in the rollback chart and the rollback data is ending up in the soak chart. In order to get it to work correctly I have to copy chart03.bin to soakChart.bin and chart04.bin to rollbackChart.bin