'Where' & sort on GUI Browser

[Emma J]

HI
First post so hope this makes sense.
I am adding a new gui Brower in the user-interface app for syteline and cannot get the where and sort option to work.
I am openeing the brower and click on the query, the options of table, join where, etc are shown. I select where and pick my field and value. In my case tt.poitem.stat = "O".
Seems easy but does not work!!
I must be doing something wrong but what????

Hope someone can help

Thanks