Scripts Changed to Linked Messages

I know I'm kinda in a linked message grove- have a particle targeting set of scripts that I need to target via linked messagesrather then llSay, and two linked message to turn the particle stream off/on

link_message(integer sender, integer num, string message, key id)
{
if (message == "ptoff"
{
// particle system off?
}
else if (message == "pton"
{
// particle system on?

Can send working example of particle target as it stands.