Database
[{"_id":ObjectId("610035cb8e7acd3c68ca46fa"),"is_free":false,"usersChecked":[{"isChecked":false,"userId":"60f6fe96a1a44a1fb4a59573",},{"isChecked":false,"userId":"60f2990b8e0cc805b4245455",}],},{"_id":ObjectId("610035cb8e7acd3c68c766fa"),"is_free":false,"usersChecked":[{"isChecked":false,"userId":"60f6fe96a1a43a1fb4a32573"},{"isChecked":false,"userId":"60f2990b8e0cc805b4245455"}]},{"_id":ObjectId("610035cb8e7acd3c68c766fb"),"is_free":false,"usersChecked":[{"isChecked":false,"userId":"60f6fe96a1a44a1fb4a59573"},{"isChecked":false,"userId":"60f2990b8e0cc805b4245455"}]}]
Query
db.collection.update({"usersChecked.userId":"60f2990b8e0cc805b4245455"},{"$set":{"usersChecked.$.isChecked":true}},{multi:true})