def update_stats(self, stats, delta=1, sampleRate=1):
        """
        Updates one or more stats counters by arbitrary amounts
        """
        if not self.enabled or self.addr is None:
            return

        if type(stats) is not list:
            stats = [stats]
        data = {}
        for stat in stats:
            data["%s%s" % (self.prefix, stat)] = "%s|c" % delta

        self.send(data, sampleRate)