SAP Design Studio 1.6 SP2 - setVariableValue not working

Hello,

since we upgrade from SAP Design Studio 1.5 to DesignStudio 1.6 SP2 we have an akward issue. It seems that setVariableValue and / or setVariableValueExt ist not working on Datasource level if one starts it from "On Before Prompt Submit" property.

If we set the methods on the property "On Startup" it works.

Is this a bug or new with SP2 of SAP DesignStudio 1.6?

Regards

Frank