How to access checklist items and create payload for an API post using card buttons?

[Manuel Gebetsberger]

I want to create a card button e.g. "submit items" which should do a post request to an API endpoint. The payload of this post should be the individual checklist items and their status. I have not found a proper way with the attributes to achieve this.

[milynnus]

@Manuel Gebetsberger 

You need to use for each item and you limited to using the variable {checklistitemname}