Event form suitelet

Hello. I tried to make an event entry from Customer Center using this code:

function EventForm(request, response)  {     if(request.getMethod() == 'GET')   {    //atunci se creeaza si se populeaza forma    var form = nlapiCreateForm('Enter Event Form');    var title = form.addField('title','text','Title');    //id:title    var location = form.addField('location','text','Location'); //id:location    var st_date = form.addField('_date','date','Date');   //id:startdate    var from = form.addField('from','timeofday','From');  //id:starttime    var to = form.addField('to','timeofday','To');   //id: endtime    var message = form.addField('message','longtext','Message'); //id: message            form.addSubmitButton('Submit');          response.writePage(form);         }   else{     dumpResponse(request,response);   }  }    function createEventRecord(title, location, st_date, from, to, message)  {   var record = nlapiCreateRecord('calendarevent'); //reference guide pg. 23     record.setFieldValue('title', title);   record.setFieldValue('location', location);   record.setFieldValue('startdate', st_date);   record.setFieldValue('starttime', from);   record.setFieldValue('endtime', to);   record.setFieldValue('message', message);     var id = nlapiSubmitRecord(record, true);  }