problem refs:
https://community.make.com/t/error-with-map/36558/8
here is my basic function, not that powerful as standard one, but can help to fix comma issue
function map2(data, property, filterLabel, filterValue) {
return data
.filter((obj) => obj[filterLabel] && obj[filterLabel] === filterValue)
.map((item) => item[property]);
}