I have tried it with the code you send, but for some reasons it doesn't work. It does return the error "DynamicWebCharts/Data/diagramm_dataparser.asp?".
I don't know really where to start finding the error, as I don't know exactly what the different parts of the query mean.
Which part returns the month, year, which parts add up the days?
Do you have any idea why it doesn't work?
Thanks very much for teh help!