offset path

[#1]

I would like to make uv light  effect in illustrator, but the offset path is not working. I did it -10mm but i didn't see the text line changes. The size was the same. 

Why i have this problem?

I hope somebody could help me to solve it.

Thanks

[#2]

I would like to make uv light  effect in illustrator, but the offset path is not working. I did it -10mm but i didn't see the text line changes. The size was the same. 

Why i have this problem?

I hope somebody could help me to solve it.

Thanks

[#3]

If you are attempting to use Object menu > Path > Offset Path on live type you will get no result because live type is not a path. If you outline the type (Type menu > Create Outlines), the type will become paths, and the offset will work. On the other hand, if you want to maintain live type you could try the Effect menu > Path > Offset Path and see if that does what you need.

Peter