This is my web console snippet.

My form widget code.
var site = page.url.templateArgs.site;
// Read the node reference of Document Library
var alfDestination = null;
var result = remote.call("/slingshot/doclib/container/" + site
+ "/documentLibrary");
if (result.status.code == status.STATUS_OK) {
alfDestination = JSON.parse(result).container.nodeRef;
}
// Create the form control for the student
var studentFormWidget = [ {
name : "alfresco/forms/controls/DojoValidationTextBox",
config : {
label : "Student ID",
name : "prop_student_StudentID"
}, {
name : "alfresco/forms/controls/DojoValidationTextBox",
config : {
label : "First Name",
name : "prop_student_firstName"
}
}
}];
// Create the form here
var form = {
name : "alfresco/forms/Form",
config : {
showOkButton : true,
okButtonLabel : "Save",
showCancelButton : false,
cancelButtonLabel : "",
// Specify the TOPIC here
okButtonPublishTopic : "ALF_CRUD_CREATE",
okButtonPublishGlobal : true,
okButtonPublishPayload : {
// Specify the URL here to POST the data
url : "/sample/helloworld",
// To create the folder under document library, we need the
// documberLibrary nodeRer,So POST that too.
alf_destination : alfDestination
},
widgets : studentFormWidget
}
};
// Add the form and services to the JSON MODEL
model.jsonModel = {
widgets : [ form ],
services : [ "alfresco/services/CrudService",
"alfresco/services/NavigationService",
"alfresco/services/UserService",
"alfresco/services/DocumentService"]
};url of repo webscript: "/sample/helloworld",
How can I get the data passed here in this form
prop_student_studentId , prop_student_firstName
in repository webscript?