Document DB $muliply query not working

Question

We have created a documentDb instance having a 4.0.0 version. When running the query using $muliply it throws an error as Bad Query.
**Query:  'test': { $multiply: ["$price", 8 ] }
**When checking the documentation it says the $muliply is supported. Not sure why it throws a Bad Query

Cody_A · Answer

What is the error message you are getting? From the syntax of what you provided, it looks like you are missing brackets around your multiply aggregation expressions.

```
'test': { $multiply: "$price", 8 }
```
...should be...

```
'test': { $multiply: ["$price", 8]}
```
See more here: https://docs.mongodb.com/manual/reference/operator/aggregation/multiply/

Document DB $muliply query not working

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