- or download this
@REM --------------------------------
@REM runme.cmd
...
call setter.cmd
echo After setter.cmd
echo %FOO%
- or download this
@REM ---------------------------------
@REM setter.cmd
echo "I am in setter."
set FOO=biz
echo Setters FOO = %FOO%
- or download this
--------------------------------------
output
...
Setters FOO = biz
After setter.cmd
biz