label on the map

[nikita_lnx]

Hello! Could anyone help me with this little issue? I've created a map and add some information using macro labels, but it isn't working..
What did I miss?

Certificate:{{HOST.HOST}:cert.validation.last(0)}
CPU Load:{{HOST.HOST}:system.cpu.util.last(0)}

[nikita_lnx]

Sorry! Found a solution
{?last(/{HOST.HOST}/key)}