The result value of `watch`{{}} is generated by calculating the
`watch-express`{{}} ognl expression. You can change the ognl expression to
generate the desired value, please refer to
[OGNL document](https://commons.apache.org/proper/commons-ognl/language-guide.html).

> Maps can also be created using a special syntax.
>
> #{ "foo" : "foo value", "bar" : "bar value" }
>
> This creates a Map initialized with mappings for "foo" and "bar".

The following command generates values ​​in map format:

`watch *MathGame prime* '#{ "params" : params, "returnObj" : returnObj, "throwExp": throwExp}' -x 2 -n 5`{{exec}}
When executing the above command in a Telnet shell/WebConsole, it will output the relevant information for `demo.MathGame.primeFactors`{{}} .

You can use `Q`{{exec}} or `Ctrl+C`{{}} to exit the watch command.

Execute the above command with Http api, pay attention to escaping the JSON double quotes:

`curl -Ss -XPOST http://localhost:8563/api -d '{"action":"exec","execTimeout":30000,"command":"watch *MathGame prime* #{\"params\":params,\"returnObj\":returnObj,\"throwExp\":throwExp} -n 3 "}' | json_pp`{{execute T3}}

You can see that the value of the watch result becomes a map object, and
the program can read value through a key .