Yes, sorry for the missing documentation
Code:
## plugin::CheckForInstance(guild_id, zone_id)
## returns $instance_id, "EXPIRED", or "FALSE" based on `destroy` field
On the quest NPC:
Code:
# $gu_ID = 1, $zo_ID = 10
my $instExists = plugin::CheckForInstance($gu_ID, $zo_ID);
-Hate