Hiding and showing the Quiz Retake Button

Hello there -

I am new to Articulate but have been in eLearning for a number of years. I am trying to show the "Retry Quiz" button when the user receives lower than 80%. I have been able to hide the button when they pass the course but I can't get my triggers to work to show the button when the user fails. My inputs for this are:

Action: Change state of

On object: Button

To State: Normal

When: Timeline starts

Object: Button

On condition: Results.PassPercent<less than 80

THANKS!