Retrieve records depending upon a text field value

function codeDetails(executionContext) {
    debugger;
    formContext = executionContext.getFormContext();

    var Fromcode = formContext.getAttribute("new_transferfromcode").getValue();

    var result;
    var req = new XMLHttpRequest();
    req.open("GET", csjs.clientURLVersion() + "/api/data/v8.2/accounts?$select=new_newcode,new_physicaladdress,new_physicalcity,new_physicalstate,new_physicalzip,name,createdby&$filter=_new_newcode_value eq " + Fromcode + " &$orderby=createdby desc", true);
    req.setRequestHeader("OData-MaxVersion", "4.0");
    req.setRequestHeader("OData-Version", "4.0");
    req.setRequestHeader("Accept", "application/json");
    req.setRequestHeader("Content-Type", "application/json; charset=utf-8");
    req.setRequestHeader("Prefer", "odata.include-annotations=\"*\"");
    req.onreadystatechange = function () {
        if (this.readyState === 4) {
            req.onreadystatechange = null;
            if (this.status === 200) {
                var results = JSON.parse(this.response);
                var recordCount = results["@odata.count"];
                for (var i = 0; i < results.value.length; i++) {
                    var new_newcode = results.value[i]["new_newcode"];
                    var new_physicaladdress = results.value[i]["new_physicaladdress"];
                    var new_physicalcity = results.value[i]["new_physicalcity"];
                    var new_physicalstate = results.value[i]["new_physicalstate"];
                    var new_physicalstate_formatted = results.value[i]["new_physicalstate@OData.Community.Display.V1.FormattedValue"];
                    var new_physicalzip = results.value[i]["new_physicalzip"];
                    var name = results.value[i]["name"];

                    formContext.getAttribute("new_comments").setValue(new_physicaladdress);
                }
            }
            else {
                Xrm.Utility.alertDialog(this.statusText);
            }
        }
    };
    req.send();
 
}