Problem with looping to create radar area

[kuwalda]

Hello.

My goal here is quite simple - make whole map like chess table using radar areas using lua loop functions.

To make it a bit clearer to you - it starts on bottom left corner of map and goes to all the way to left, then goes "one row up" and continous its story till all map is covered.

Problem in this script is that - it makes only first row. Why? Where did I go wrong?

I think my script is really easy to anyone to understand and get my main idea, so any help would be much appriciated.

  
FIXED