Need help with Custom JRUBY code to parse JSON input from MS Power Automate

Application: JDE E1 9.2

Tools Release: 9.2.6.3

AIS & HTML Servers Tools Release: 9.2.6.4 06-09-2022_02_04

Orchestrator "MSAUTOMATEIN" is being invoked by MS Power Automate using REST API call "/jderest/v3/orchestrator/MSAUTOMATEIN" and passing JSON as specified below

{
  "ProformaInvoice": [
    {
      "UniqueID": 0,
      "CompanyKey": "string",
      "DocumentType": "string",
      "DocumentNumber": 0,
      "AddressNumber": 0,
      "AmountGross": 0,
      "VendorInvoiceNumber": "string"
    }
  ],
  "ApprovalStatusInfo": [
    {
      "ApprovalActionCode": "string",
      "ApprovalMessage": "string"
    }
  ]
}

I added Variables in "Inputs and Values" of the Start step of Orchestrator.

I added Custom f(x) step "MAPJSON" to parse JSON Array and assign it to variables. So that can use output Variables of "MAPJSON" to the Report service request "EXENEXTSTEPS" by passing variables to Report Interconnect (RI)