[Devmon] Threshold for interfaces

[mario a. <row...@gm...>]

Hi friends,

I'm trying to create a threshold for a especific interface name like

thresh(if_load;port1;r:10;y:9) , Is it the correct way? Is it possible?

I've also tried   hresh(if_load;ifName:port1;r:10;y:9)

Thanks in advance,

Mario.