Result (sum) form a cell as report parameter.

Hi,

Is it possible to add the result (sum) from a cell to the report parameters?

My cell "różnica” (Eng. ”difference") = sum(FACT_INVENT_TRANS_HIST. TOTAL_COST with a minus sign '-') - sum(FACT_INVENT_TRANS_HIST. TOTAL_COST with a plus sign '+')

In the report parameters I want to add a condition that only rows with non-zero values in this cell are presented, i.e.: sum(FACT_INVENT_TRANS_HIST. TOTAL_COST with a minus sign '-') - sum(FACT_INVENT_TRANS_HIST. TOTAL_COST with a plus sign  '+') <> 0