[Dovecot] @2.0, Fatal error (Expecting '=') in trash plugin config

[PGNet Dev]

i've setup trash plugin as,

	grep trash imap.conf
		mail_plugins = autocreate fts fts_squat fts_solr imap_quota quota trash zlib

	cat plugin.conf
		plugin {
		  ...
		  trash = /data/mail/Conf/dovecot/conf.d/trash.conf
		}

	cat /data/mail/Conf/dovecot/conf.d/trash.conf
		1 Spam
		2 Trash
		3 Sent
		3 Sent Messages

but, @

	dovecot -n
		# 2.0.alpha1: /data/mail/Conf/dovecot/dovecot.conf
		doveconf: Fatal: Error in configuration file
/data/mail/Conf/dovecot/conf.d/trash.conf line 1: Expecting '='

bug, or change frp, v1.x in config/parsing?