Error on API form

[Apple]

1. Move the API Action outside the Group
2. Give the Group a name
3. In API Action JSON data, put {{groupName}}, where groupName is the name you gave to the Group

Regarding point 3, not sure if it works like that, or if we have to apply a JSON encode formatter, I don’t remember what’s it called, and I’m not sure if Wappler shows it in the UI

Edit: Found the JSON encode formatter:

What's the JSON encode formatter?

Found it: toJSON: function(val) { return JSON.stringify(val); }, parseJSON: function(val) { return JSON.parse(val); },

So the expression probably is {{groupName.toJSON()}}