Cleaning area Turtle, can't figure out error in my code

Hi all I've made this program http://pastebin.com/AjwDykNK to flatten a certain area.

The turtle start from the bottom left corner of the rectanle and goes in a shape like and S on each layer and then goes up one block to start a new layer.

I get the bios 338 string "test":66: ')' expected but on line 66 all the () are right. Or at least I can't see the error..
A part from the formal error the code should be right but I didn't managed to run it properly..

Thanks in Advance.

Split into new topic.

We cant define an elseif statement in one go. For that, we use the and keyword. Replace line 66 with this and you should be fine:

elseif o == 1 and not j == wid then

However, if you are comparing to variables, you could use the ~= operator. It is the same as you are intending:

elseif o == 1 and j ~= wid then
--# read it like: elseif o is equal to one and j is not equal to wid, then 

:)/>

Edit: I made a small mistake in my story :P/>

Those two lines are different. The first inverts j prior to the comparison.

indeed, the parenthesis in "not (j==wid)" in the op's pastebin code were rather important, and got dropped in Engineer's first version. Without them, it is evaluated as "(not j)==wid"

I suspect from glancing at the code that Maxiride is unfamiliar with ~=, which is the "not equals" operator in lua, and can be used instead of "not(a==B)/>" in general.