Hello, I am trying to add an JavaBean Data Adapter to my report, which works out fine. Test says successfull! My next step is to create a new Report and right click on it > Dataset and Query... on top i have to select my DataSource -> i choose the one i created successfully before. below i check Java Bean, which switches me to an formular where i shall select the class name. i know the name of the class file and enter it, but Jaspersoft Studio does not find my class. how can i fix this? As the Test says successful i wonder why Studio does not find my jar anymore.