core_calendar_delete_calendar_events

I have already read API document and add following required parameter of this function but still have invalid parameter error. Can somebody help me?

http://192.168.1.6/moodle/webservice/rest/server.php?wstoken=53e97de74d3634ef57f0c7cde008b5e8&moodlewsrestformat=json&wsfunction=core_calendar_delete_calendar_events&events[0][eventid]=22&events[0][repeat]=4

REST (POST parameters)
events[0][eventid]= int

events[0][repeat]= int

Thanks guys so much