hold_court_queue_post_event_effect

hold_court_queue_post_event_effect = {
	# Sort the ending counter.
	## If there's no ending counter, create one.
	if = {
		limit = {
			NOT = { has_variable = petitioners_dealt_with_count }
		}
		set_variable = {
			name = petitioners_dealt_with_count
			value = 1
		}
	}
	## Else if there is a counter below the total petitioner tally, increment it.
	else_if = {
		limit = { var:petitioners_dealt_with_count < initial_petitioners_value }
		change_variable = {
			name = petitioners_dealt_with_count
			add = 1
		}
	}
	## If appropriate, run the end stuff.
	if = {
		limit = {
			exists = var:petitioners_dealt_with_count
			var:petitioners_dealt_with_count >= initial_petitioners_value
		}
		# Remove the counter.
		remove_variable = petitioners_dealt_with_count
		# Launch into cleanup.
		trigger_event = hold_court.0021
	}
}

As written in game/common/scripted_effects/00_ep1_hold_court_effects.txt.