hi @Shane - you need to add an Action Button component to the page - and in its Behavior settings set Button Action to No action.
I would also recommend giving it an easy-to-identify Title like ‘Click to reveal’:
Then you’ll be able to select it in the Conditions section of your Logic Trigger:
(Screenshot shows revealing an Article rather than Blocks - you just need to select ‘Show Hidden Blocks’ instead)
If you need any further support with this please get in touch with Evolve Support.