[Bro] bro notice framework

[bz Os]

hello Evry one i attempt to have a notice on my email when an scan against
my network done ,i writed this script :

@load policy/misc/scan.bro
>    hook Notice::policy(n:Notice::type){
> if(n$note==Scan::Address_Scan){
>     add n$actions[Notice::ACTION_EMAIL];
> }
> }


but when i test scan against my network ,i had nothing in my email ,but i
have a notice that a scan is made in the file notice.log
how can i resolve this probleme?
and how make the file notice.log to log a significant notice for example
when a scan is made it wil create scan made by and adresse of the host
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