Not able to copy a quotation field jobcard_no to Sales order filed jobacard_number

1

Custom script to copy custom field jobcard_no in quotation doctype to posmedia_jobcard_reference custom filed in sales_order

Custom script for sales order

frappe.ui.form.on(“Sales Order”,“quotation_reference”, function(frm) {

        frappe.db.get_value("Quotation", {"naming_series": frm.doc.quotation_reference}, "jobcard_no", function(value) {
        frappe.model.set_value(frm.doctype, frm.docname, "posmedia_jobcard_number", value.jobcard_no);
        
        });
        frm.reload_doc();

});

Any help appreciated.