Recovery expression for trigger on log item

[stepassia]

Hi, I'm trying to set a recovery expression for a trigger based on a log item.
This is the conf:

ITEM1:

• Key: log[/var/log/apache2/pgw055055.error.log, @ErrorOnLogMIP]
• Type: log

ITEM2:

• Key: log[/var/log/apache2/pgw055055.access.log, @RecoverOnLogMIP]
• Type: log

The ITEM1 records the string that starts the trigger. The ITEM2 records the string that ends the trigger.

Trigger:

• Problem expression: {SERVER:log[/var/log/apache2/pgw055055.error.log, @ErrorOnLogMIP].iregexp(@ErrorOnLogMIP)}=1
• Recovery expression: {SERVER:log[/var/log/apache2/pgw055055.access.log, @RecoverOnLogMIP].iregexp(@RecoverOnLogMIP)}=1

The ITEM collect correct data, the trigger starts but never ends even if the ITEM2, after trigger starts, register a recover strings.

Whats wrong?
Thanks