You don't even need the |. It sometimes makes the script harder to read. If you want a popup to do multiple things, you can use the brackets and type each command on separate lines. Here's an example.
Code:
Multi Line: {
echo My name is $me
describe $chan waves.
}

This would be a popup that would execute both of those lines when you run it, and it doesn't need to use the |. Hope that helps.