Is there any function to start/stop another script?

For example, I have a few scripts modifying my nickname. When an event modifying it is done, I want to start another script to let it gain control of the nick changind function, until a time when the event runs again and it stops the script and takes over control again.

How do it do it?

Erm, You can just enable or disable the scripts from your Messenger Plus prefernce

Think you are misunderstanding my question. I mean, is there anyway to use a script to do that so that I don't have to manually change it all the time? I'm using the date-time script and world cup script. Both changes the psm, so I cannot run both concurrently without conflicting with each other. After the game ends, I want to disable the world cup script and enable the date time script automatically. This means that I need a function so that one script to start another and terminate itself.

You can modify the registry keys for each scripts.