Please check data date in this lesson, at the first time the data set don't include it. Is it change that I don't know? Thank you!

I confirm that you don't have the Date field, but you can create a calculated field: DATE(STR([Year])+"-"+STR([Month])+"-01")

how should i use it do i create the date field and follow along with the video or what !! , i did so and when i try to check the true box after adding the date range to the filter i simply find only the false one and it doesn't work so what now ?

This is a calculated field, which you can create from the Analysis tab. At this point in the course, I'm sure you know how to do it. :) The value true is found when creating the filter in the general tab "Select from list". You can also edit an existing filter to check the correct value.