Why isn't my query executed?

Hey!

I have been trying to execute different queries in the test area, but get all the time "No data was selected" text. I have made the selection criteria and defined the output option, and everything should be fine. The only thing I haven't been able to do is to define the layout on the last page, because I cannot do the selections. I hope someone would be able to tell me what's wrong, since I have tried almost everything but haven't found any solution.

Thank you,

Maria