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SUBMIT YOUR IDEAEdit post -> doing it again to correct some errors and i'll post it again later.
I got a different answer when I used the date time tool and when i used DateTimeParse([Date],"%Y-%m-%d")>='2013-07-01' this is frustrating as my first answer gave me 35%, anyway I redid using datetimeparse and got the correct answer, did not have to use flags like in the provided solution, think mine is simpler.