nlapirequestURL - FTP access to Filecabinet

Hi Everyone,

I have been trying to access a file through a website and download it to Netsuite's Filecabinet, and then import and map variables in Netsuite using Scheduled scripting. But I have been getting an error. Here is my code, any help is appreciated?
Is this possible?
Can it be run in scheduled script?

 function scheduledimporting(type){      var urlrequest=nlapiRequestURL('http://users17.jabry.com/testepdm/Test.csv',null,null);  //Reqeust file from FTP servers      //var body=readResponse.getBody(); //get the body of the message      var responseJson=JSON.parse(response.getBody()); //Parse the response      var error = responseJson['error']; //Error Handling            if (error) //start IF          {              var code = error.code;              var message = error.message;              nlapiLogExecution('DEBUG','failed: code='+code+'; message='+message);              nlapiCreateError(code, message, false);          } //End iF                var filecontentx64=responseJson["filecontentbase64"]; //Decode      var textcontent=decode_base64(filecontentx64);            //create new folder      var myfolder = nlapiCreateRecord('folder');      myfolder.setFieldValue('name','CSV-Folder');      var myfolderid = nlapiSubmitRecord(myfolder); //returns out folder id      //File to filecabinet      var csvfilename="URLREQUESTTTT.csv";      var csvfile=nlapiCreateFile(csvfilename,"CSV",textcontent);      csvfile.setFolder(myfolderid);      var mytxtfileId = nlapiSubmitFile(csvfile); //returns out file id            //Import Process      var csvMap = '15'; //saved CSV import id      var csvImport = nlapiCreateCSVImport();//creating a new