Quote: "I am use a trigger zone, I want that after the script is executed is disabled but not destroyed."
Quote: "I think if he wanted to activate it at a later time he should activate a new script."
Keep in mind
any script left running will eventually drop the FPS, particularly if you have more than 5 of these "idle" scripts running. It is best to terminate the script, but before you terminate it, the script *could* activate a trigger somewhere to run that same script again.
There's no problem that can't be solved without applying a little scripting.