Delta don't work with "ZABBIX Trapper" items

[rickardp]

I have recently begun to use trapper items. The problem is that I have a "total requests" type item that I want to monitor the delta of i.e the difference between samples.

The values arrive OK into the zabbix_server but if the item is of type "delta" no value is stored in the database.

For "ZABBIX Agent" items this functionality work wonders.

Edit*****

It does not work for trapper items, any ideas????