Invoke-BalloonTip not working?

[NerfedHerder]

I'm pretty new to this stuff but I'm trying to get this one to run. I run it but no balloons appear. The script also is not failing. Is there anything that I should be modifying in the script?

Here is what I see:

I'd love any help. thanks!

[proxb]

@NerfedHerder This is a function within the script so you will need to take it one step further.

. .\Invoke-BalloonTip.ps1
Invoke-BalloonTip -Message 'Message' -Title 'Blah' -MessageType Info