Hello, Thanks a lots for this page which is helping us but do you know if we can find somewhere an example about changing the data sourceS of a report? I put the S in upcase because it is OK with only one but we are facing problems when having more than one to update. If I try to update 2 datasources, I don't find samples describing the correct order ({OLD1},{OLD2},{NEW1},{NEW2} or {OLD1},{NEW1},{OLD2},{NEW2} , etc...) and I have syntax errors. And if I decide to have only {OLDx},{NEWx} in order to update all one by one, it seems that after the first update I keep only the updated datesource and loose the other ones..