def set_start_date_wlan(self, start_day: int, data_limit: str, month_threshold: int):
return self._connection.post('<STR_LIT>', OrderedDict((<EOL>('<STR_LIT>', start_day),<EOL>('<STR_LIT>', data_limit),<EOL>('<STR_LIT>', month_threshold),<EOL>('<STR_LIT>', <NUM_LIT:1>)  <EOL>)))<EOL>
Sets network usage alarm for WLAN
:param start_day: number of day when monitoring starts
:param data_limit: Maximal data limit as string eg.: 1000MB or 1GB and so on
:param month_threshold: Alarm threshold in % as int number eg.: 90
:return: dict