Alert rules... too much notifications

Hi guys.
I have my librenms system runing nice.
Lsat night one of my alert rule entered in alert status.
Alarm last for 40 minutes.
During the alarm period I received on notification per minute.
My idea was to receibe only first time notification and then repeat every 45 minutes if alarm steal active.
This is what I set:

What is wrong ? why im reciving too many notifications ?

Set interval to 45m

Also you have max alerts set -1 which means unlimited alerts will send.

thanks doc!