suspending a specific alarm for a specific object

Hello,

im looking for a way to disable a specific alarm from firing for a specific object in vfoglight.

for instance: for a specific vmware virtual machine, not to fire the "vmware tools arent installed" alarm

i've tried to create a blackout, but wasnt able to find a way to suspend this specific alarm rule for a given VM.

any help will be appreciated

thanks

Eli