I have a collection of users. Each user has an array named `favoriteNames`.

```
root <- [Firestore]
 users <- [Collection]
   uid <- [Document]
    favoriteNames: ["Ana", "Jane", "Dave"] <- [Array]
   uid<- [Document]
    favoriteNames: ["Ana", "Merry", "John"] <- [Array]

```

I want to remove "Ana" from all documents. This is what I tried:

```
usersRef.whereArrayContains("favoriteNames", FieldValue.arrayRemove("Ana").get()

```

But it doesn't work. How can I remove "Ana" from all arrays?