For Each Giving Error In Filter

Hi Expert,

I am using "=If(([CY_Months]ForEach([L01 Customer]))>=0;"DR";If(([CY_Months]ForEach([L01 Customer]))<0;"CR"))" this logic to filter the customers.

This variable working fine when I am using in Input controls but giving error when I use in report filters.

Could any one suggest solution or any work around for this problem.

Thanks,

G Sampath Kumar