Dynamically fill checkboxes from CPT

Hello

I have a CPT setup which allows an admin user to fill in event info, i.e name of event, date, etc.
On the webpage (which is hidden by membership plugin) the event info is displayed in a list.
Next to this list is a gravity form which captures their info and allows them to select the event they want to go on.

I am using “checkboxes” to display the list of events, which i have to manually add each time a new event is added.

Is there a way i can dynamically fill this list from a CPT field ?

I have ticked “allow field to be populated dynamically” and added the same field name from CPT to the parameter name box, but i am guessing something else needs to be done to achieve this.