Siang gan.
Ane lagi mau bikin google form yang berbatas waktu dan jumlah pengguna
Setelah ane googling ketemulah web ini: https://www.labnol.org/internet/sche...e-forms/20707/

Ane coba ikutin caranya, masukin script di Script Editor
Nah pas di langkah activating, ada error message, katanya gini: TypeError: Cannot call method "setAcceptingResponses" of null. (line 61)

Ini ane copas in script nya:

FORM_OPEN_DATE = "2014-12-20 08:00";

FORM_CLOSE_DATE = "2014-12-25 23:30";

RESPONSE_COUNT = "100";



/* Web tutorial: http://labnol.org/?p=20707 */



/* Initialize the form, setup time based triggers */

function Initialize() {

 

 deleteTriggers_();

 

 if ((FORM_OPEN_DATE !== "") && 

 ((new Date()).getTime() < parseDate_(FORM_OPEN_DATE).getTime())) { 

 closeForm();

 ScriptApp.newTrigger("openForm")

 .timeBased()

 .at(parseDate_(FORM_OPEN_DATE))

 .create();

 }

 

 if (FORM_CLOSE_DATE !== "") { 

 ScriptApp.newTrigger("closeForm")

 .timeBased()

 .at(parseDate_(FORM_CLOSE_DATE))

 .create(); 

 }

 

 if (RESPONSE_COUNT !== "") { 

 ScriptApp.newTrigger("checkLimit")

 .forForm(FormApp.getActiveForm())

 .onFormSubmit()

 .create();

 }

 

}



/* Delete all existing Script Triggers */

function deleteTriggers_() { 

 var triggers = ScriptApp.getProjectTriggers(); 

 for (var i in triggers) {

 ScriptApp.deleteTrigger(triggers[i]);

 }

}



/* Send a mail to the form owner when the form status changes */

function informUser_(subject) {

 var formURL = FormApp.getActiveForm().getPublishedUrl();

 MailApp.sendEmail(Session.getActiveUser().getEmail(), subject, formURL); 

}



/* Allow Google Form to Accept Responses */

function openForm() {

 var form = FormApp.getActiveForm();

 form.setAcceptingResponses(true);

 informUser_("Your Google Form is now accepting responses");

}



/* Close the Google Form, Stop Accepting Reponses */

function closeForm() { 

 var form = FormApp.getActiveForm();

 form.setAcceptingResponses(false);

 deleteTriggers_();

 informUser_("Your Google Form is no longer accepting responses");

}



/* If Total # of Form Responses >= Limit, Close Form */

function checkLimit() {

 if (FormApp.getActiveForm().getResponses().length >= RESPONSE_COUNT ) {

 closeForm();

 } 

}



/* Parse the Date for creating Time-Based Triggers */

function parseDate_(d) {

 return new Date(d.substr(0,4), d.substr(5,2)-1, 

 d.substr(8,2), d.substr(11,2), d.substr(14,2));

}



/* Written by Amit Agarwal [email]amit@labnol.org[/email] */

Itu yg ane bold yg Line 61 nya gan

Ada yang tau gimana cara benerinnya?