Thanks Sunny for the reply I have fixed it, but I have one more issue. I am using expression like below and it is giving right result for selected period.
Sum(if(Aggr(Avg(TOTAL <[Field1]> [ Rollups)])>'12', [Field1]),1,0))
But I want rolling 6 periods on line chart and when I am trying to use set Analysis it is not working.
Thanks in advance.