Slicer

Hello,

In my report, I have a table visual which is generated by using columns from different tables. I applied some filters on the table visual by writing a calculated column where I am comparing two prices and flagging them 1 or 0 where the prices are not same and filtering the table visual where this calculated column value is 1. Now, I need to add a slicer on some columns of this table visual. But the problem  is, I am not able to reflect the filtered values only into the slicer. It shows all the values. How can I achieve this, to show values only from the filtered table? I applied page level filter, but it is not working? It is showing empty.

Thank you