Basic "For" loops reporting errors

Hello everyone. I'm totally new to forum posting, I'll do my best to make a comprehensible post.
As the title reads, I was fiddling around with CC 1.6 (btw, I'm new to programming) and I could not get a single "for" loop working.
Updated to 1.7 for Minecraft 1.7.10, nothing changed.

for i=1, 10, do
print(i)
end

The error message reads
bios:14:[string "Try"]:1: unexpected symbol

I cannot figure out what I'm doing wrong. Since I'm italian, could it be a keyboard issue? Don't know.

If you're not going to use the "step" feature, don't put a comma after the limit. The 2 here is the step:

i = 1, 19, 2 do

to further on from lyqyd moderator , to fix problem simple :

for i = 1, 10 do
    print(i)
end

As I supposed, it was just me being noob :D/> . thank you everyone