@4000000058db6ef81e84eb6c # *** DEPRECATION WARNING ***
@4000000058db6ef81e84eb6c #
@4000000058db6ef81e84eb6c # The 'update' method will be removed in a future major release.
@4000000058db6ef81e84ef54 # Use $_, $_ or 'replace_one' instead.

##</code><code>##

	my $col = $db->get_collection('counters');
	$col->update_one({'_id' => 'comm-id'},{ '$inc' => { 'seq' => 1}});
	my $id = $col->find_one({'_id' => 'comm-id'})->{'seq'};