The "Member" method of cJsonObject class seems to be not working, or I am doing something wrong.

Here is my code.

Code:
Set peWhiteSpace of hJson to jpWhitespace_Pretty
Get Stringify of hJson to sJson
Send Info_Box sJson
//---------------------------
//Information
//---------------------------
//{
//   "method": "Get",
//   "params": {
//     "typeName": "StatusData",
//     "resultsLimit": 20,
//     "search": {
//       "fromDate": "2020-01-01T00:00:00.000Z",
//       "toDate": "2020-01-14T00:00:00.000Z",
//       "deviceSearch": {
//         "vehicleIdentificationNumber": "1HTMMAAL0????????"
//       },
//       "diagnosticSearch": {
//       }
//     }
//   }
// }
//---------------------------
//OK   
//---------------------------

// So far, so good

Get Member of hJson "params" to hParams
Set peWhiteSpace of hParams to jpWhitespace_Pretty
Get Stringify of hParams to sJson
Send Info_Box sJson
//---------------------------
//Information
//---------------------------
//{
// }
//---------------------------
//OK   
//---------------------------
My question is, why do I get an empty object for the "params" node?

Clearly, in the first info_box, you can see that it does contain data.

Any ideas?