set FIRST=11
  set  UpperLowerCase=   lower
set    SpaceAfter  =space?  

@echo off
echo FIRST=%FIRST%
echo UpperLowerCase=%UpperLowerCase%
echo UPPERLOWERCASE=%UPPERLOWERCASE%
echo SpaceAfter =(%SpaceAfter  %)

set FIRST=2
echo FIRST=%FIRST%

pause
