How to pass both parameter and JSON in one single HTTP request body with having JSON a variable [JMeter]

Question

I have a similar but extended question for the below question. How to pass parameter and json both in http request request body in jmeter? ?

I will take the same example as mentioned in the above question/link. Have to pass multiple parameters,

UserId=47
meeting={
    "DeviceID":${deviceID},
    "NetworkCarrierName":"VODAFONEIN",
    "BatteryValue":"22",
    "AppVersion":"1.1.3",
 }

As you can see, DeviceID have a value from variable deviceID. I want to pass all these parameters and JSON in one single http request body. What would be the approach for this?

Answer 1

In parameter I have to add the variable for value part for whichever key I want to refer to. It will work fine. This image shows that..

Answer 2

The same approach will work fine, you can use JMeter Variables anywhere in your test plan, if there is a User Defined Variable or a pre-defined variable or a variable coming from a Post-Processor - JMeter will substitute the variable placeholder with its respective value in the runtime:

If you're uncertain regarding how to properly build your request the easiest is just recording it using HTTP(S) Test Script Recorder