Unable to map properties and constants in JSON request datatransform

Can we map parameter values in JSON data transform ? I am trying to send a JSON request and the values I have to send are in parameters and not on clipboard.

So how do I design my JSON data transform to map these values in Param ?

@RaviTejaNJ

You have to convert to a standard data transform if you want to use parameters. JSON data transforms can only be used on properties created against the JSON payload swagger.