Mine

[event]
name=moveto
first_time_only=no
[filter]
x=10
y=10
[/filter]

{VARIABLE flag_array[$events_spawned].flag set}
{VARIABLE_OP events_spawned add 1}

[event]
<random_coords>

{VARIABLE event_id $events_spawned}
[if]
[variable]
name=flag_array[$event_id].flag
not_equals=set
[/variable]
[then]
<do something>
[/then]
[/if]
[/event]
[/event]