Oh! I see... Excuse me.. my english is quite bad.
Anyway, the process is similar:
U can add trigger_1's CondField the conditions I proposed, plus another one, such as this (which is related with the trigger configuration) or anyother. See, though the first condition is satisfied (variables1=true) the others won't and the trigger won't be called either. So, it remais active.
example:
trigger_2
ActivField: var1=true
trigger_1
CondField: var1 and this and othervariable