Retrieving value from inventory API getRecord gives null

Retrieving value from inventory API getRecord gives null

Hi all, I have an issue with my platform I am building. I would like to fetch a list of all my sales orders that are pending shipment from zoho inventory into zoho creator as a list. This is my code for now.

When running the script, i get a null value as seen below.

Why is this the case? The retrieved data should be in a JSON/map format and using get() should be able to give me the information I need. Is this the way to do it or is there another way to do this?

To note that connection to zoho inventory is fine and I am able to get the JSON as seen below.
{"code":0,"message":"success","salesorders":[{"salesorder_id":"4165317000000893001","zcrm_potential_id":"","zcrm_potential_name":"","customer_name":"Chan Jia Jin","customer_id":"4165317000000171252","email":"","delivery_date":"","company_name":"","color_code":"","current_sub_status_id":"","current_sub_status":"confirmed","pickup_location_id":"","salesorder_number":"sample number","reference_number":"","date":"2023-12-12","shipment_date":"","shipment_days":"","due_by_days":"","due_in_days":"","currency_id":"4165317000000077068","source":"Client","currency_code":"SGD","total":0.0,"bcy_total":0.0,"total_invoiced_amount":0.0,"created_time":"2023-12-12T23:44:02+0800","last_modified_time":"2023-12-12T23:44:02+0800","is_emailed":false,"quantity":1.0,"quantity_invoiced":0.0,"quantity_packed":0.0,"quantity_shipped":0.0,"order_status":"confirmed","invoiced_status":"not_invoiced","paid_status":"unpaid","shipped_status":"pending","status":"confirmed","is_drop_shipment":false,"is_backorder":false,"is_manually_fulfilled":false,"sales_channel":"direct_sales","sales_channel_formatted":"Direct Sales","salesperson_name":"Chan Jia Jin","has_attachment":false,"balance":0.0,"delivery_method":"","delivery_method_id":""}],"page_context":{"page":1,"per_page":200,"has_more_page":false,"report_name":"Sales Orders","applied_filter":"Status.All","custom_fields":[],"sort_column":"created_time","sort_order":"D"}}

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