Changing JSON component

Hi Guys,

I'm using the following to display JSON content in an areatextbox, but I would like to change a value in my JSON before displaying it in my areabox?

set txtId.value= jobj.SampleJsonData.Read(jobj.SampleJsonData.Size)

say for example my JSON string as below and would like to change Type value, I thought of converting the JSON to object
(d ##class(%ZEN.Auxiliary.jsonProvider).%ConvertJSONToObject(jobj.SampleJsonData.Read(jobj.SampleJsonData.Size),,.list)  )    

Set the value of Type : list.Type

then convert the Object back to JSON but I couldn't find a function or method that convert Object back to JSON?

{
"Number":"091820246OB",
"id":42961251,
"SensorId":"001D091N",
"Type":"CTR"

}

Thanks