Hi

Running totals are in Whileprintingrecords phase where as record selection will be in Whilereadingrecords phase. So, you will not see running totals in record selection to filter the records.

Best way to filter based on record selection is go in section expert and suppress the records which are less than 3.

HI

do the following :

Create the below formulas and place them as mentioned

@init

Whileprintingrecords;
Numbervar x:=0 // Place this formula in group header

@acc
Whileprintingrecords;
Numbervar x:=X+1 // Place this formula in Detail seciton


Now go in section expert of detail -- suppress and write the following :

Whileprintingrecords;
Numbervar x;
If x >3 then true else false

Also you can add any suppress conditions you have for this detail seciotn by using 'and'