Unity and Custom Defines

Hi everybody, i’m trying to create a #define in c# to let the compile see or not a sdk code.
I’m trying to do what this says Unity - Manual: Conditional Compilation but i cant, Unity throws this error:

Internal compiler error. See the console log for more information. output was:warning CS2029: Invalid conditional define symbol LITE\' error CS2001: Source file {\rtf1\ansi\ansicpg1252\cocoartf1265\cocoasubrtf210’ could not be found
error CS2001: Source file {\fonttbl\f0\fmodern\fcharset0' could not be found error CS2001: Source file Courier;}’ could not be found
error CS2001: Source file {\colortbl;\red255\green255\blue255;\red44\green50\blue53;\red245\green249\blue250;}' could not be found error CS2001: Source file \paperw11900\paperh16840\margl1440\margr1440\vieww10800\viewh8400\viewkind0’ could not be found
error CS2001: Source file \deftab720' could not be found error CS2001: Source file \pard\pardeftab720\sl640’ could not be found
error CS2001: Source file \f0\fs22' could not be found error CS2001: Source file \cf2’ could not be found
error CS2001: Source file \cb3' could not be found error CS2001: Source file }’ could not be found

Anybody know how to?

Thanks!

I understood now how to use them. I did preprocessors in a specific platform and now works!