Help with Master calendar script error in the Qlik Tutorial

[#1]

Good morning,

First of all I want to apologize to re-up this old situation.

I am realizing an tutorial "Building an App" version 1.1 and I am having a problem to continue it when I try to execute the script Master Calendar:

The following error occurred:

Invalid Autogenerate count: -1

The error occurred here:

TempCalendar:

LOAD

DATE ( + ROWNO() -1) AS TempDate

AUTOGENERATE - +1

May you help me, please?                       

Follow some screenshots I did:

Thank you.

[JustinDallas]

What is this minus then plus sign doing?

AUTOGENERATE - +1

[Anonymous]

Apparently the variables defining start and end dates are missing:

TempCalendar:

LOAD

DATE ( <missing start date> + ROWNO() -1) AS TempDate

AUTOGENERATE <missing end date> -  <missing start date> +1