While statement

I am trying to add if/while statement on a ube on e1 9.2. So far I have used if/while with select and fetch next and while SV file IO Status is co success. Then I loop the commands with fetch next inside the while and end while statement. I would rather like the process to work with a variable comparison instead of file IO status. For example While VA rpt_UnitsOpenQuantity_UOPN is less than or equal to zero and then change the variable value within the while/end while statement. Does while/end while work with variable comparison?