You could use the built in Player strings for that. Then you can avoid your problem. Look into the manual under player functions.

To your problem: your enet_send_array() and enet_svsend_event() calls don't work because a TEXT element is not natively supported. You have to send the content of the String array:

var size = 2*sizeof(string) + str_len((playerlist.pstring)[0]) + str_len((playerlist.pstring)[1]);
enet_send_data(&((playerlist.pstring)[0]), size, BROADCAST);

This is only a guess, I'm not sure if this would work!