Alert template for ICMP

I created an alert rule for an ICMP service on a single IP.
The rules works well but I want to display the description of the ICMP service in the mail template.
I tested some combinations but it didn’t works.



for those who want to know.

My rule :
%services.service_status = "2" &&

My template:

Date et heure: %timestamp
Alerte: {if %name}%name{else}%rule{/if}{if %faults}{foreach %faults}
Etat du ping: {if %state == 0} Up {else} Down {/if}
Nom du client: %value.service_desc