Hello, I have created an custom query executer for jasperstudio, but I can't seem to get the fieldprovider to work. I got a class that implements the import com.jaspersoft.studio.data.fields.IFieldsProvider. But I think i have to add it to the jaspereports_extensions.properties as well. The only thing I have in that file is this line: net.sf.jasperreports.extension.registry.factory.qe=com.jaspersoft.studio.cxs.qe.ConnexysExtensionsRegistryFactory What should I add here to get the Fieldprovider to work, or should I do something else ? Greetings, Peter