How to Query data from REST webservice Json result

Hi Everyone,

Hope you are doing well.

Here i want to query the data from a result which i received through REST webservice(Json). this is the script i am using..

"record"-collection of all available orders data.

"value"- a defined variable to store one data record

Here the result is in Json format, from the result i need to query for required data, i am getting following error

Kindly please help to solve this

Thanks