I want to be able to have a maintain array of counters for a user through a single update statement. If the document containing array of counters does not exist, I want to add it. If it does exist, I want to increment the counter For example, this command ``` db.inboxItemCounts.updateOne( // filter { "userId": userDoc.userId }, // update { "$setOnInsert": { "userId": userDoc.userId, "fromUserSummary": [{ "userName": fromUserDoc.userName, "count": 1 }] }, // "$inc": incBody, "$inc": { "fromUserSummary.$[userElement].count": 1 } }, // options { "upsert": true, "writeConcern": { "w": "majority" }, "arrayFilters": [ { "userElement.userName": { $eq: fromUserDoc.userName }} ] } ); ``` produces this error "MongoServerError: Updating the path 'fromUserSummary.$[userElement].count' would create a conflict at 'fromUserSummary" That's ridiculous because the command knows that what's is to be used on insert versus update.