How can i update an object (map) in an array with swift in firestore database?

Question

I want to update a field of an object that the object is in an array in the Firestore database with Swift 4. These two functions (arrayUnion() and arrayRemove() ) are not working for me.

Here my Database schema:

I want to update the "Status" field in The first array element.

Answer 1

first of all I want to thanks to @Doug Stevenson for his kindly response. in my case, I must change the array of the objects to sub collections.