trouble with linkage maps

[amcorreia]

hi,

I have a trigger like this:
{fw1b:ssh.last(0)}=1)&({inetserver:net.tcp.port[,19221].last(0)}=1)

I use this trigger to link two servers in a map.
but this trigger not is enabled, and the link appear red (OFF) and server (ON)
if the trigger is enabled the link apper green(ON) and server (OFF)... this is normal??
don't is the reverse?
if trigger is OFF server ON link ON??
and if trigger is ON server OFF link OFF???

please anybody explain about this?

thanks and advanced.