How to edit users /w?

[fireicesurfer]

* This function parse all map-serv attached to this char-serv and increase user count
 * @return numbers of total users
 */
int char_count_users(void)
{
	int i, users;

	users = 0;
	for(i = 0; i < ARRAYLENGTH(map_server); i++) {
		if (map_server[i].fd > 0) {
			users += map_server[i].users;
		}
	}
	return users;
}

How to edit these please? its not working on my end. 

how to apply these please to increase in /w just a little bit

[Emistry]

users = 100;   // extra 100 fake players count