Evoscan problem

[oreficeraffaele]

Dear friends
i have downloaded evoscan 0,99 and i have this problem: when i start the datalogger the event log write

Info: Initializing At 5 baud...
Info: Initialization Complete...
Info: Waiting for INIT Response...
Info: Connection successful...
Error: Invalid Evaluation Expression in your Data.xml file or invalid data received.

RequestID: 21
Eval Expression: 31,25*28
Error: Unexpected comma : at position 3
Info: Datalogger Ended.

What can i modify in data.xml?
Thanks