I am trying to create a formula in the report so that if the close date is e.g 26/05/2016, return value would be 01/06/2016
formula; IF("Close Date" = "26/05/2016", "01/06/2016", "0")
But i keep getting this error :
Error: Invalid custom summary formula definition: Formula result is data type (Text), incompatible with expected data type (Number)