Setting custom Response Headers with custom environment variables in Apache

#Put Following Lines in httpd.conf

#Checks if mod_env is loaded and then sets a unconditional Environment variable called "X_Environment"
# Use SetEnvIF for conditional var setting, requires mod_setenvif.c to be loaded
<IfModule mod_env.c>
  SetEnv X_Environment Local
</IfModule>

#Checks if mod_headers is loaded and then sets a Response Header called MyHeader with value of environment varuable "X_Environment" set above
# Use http://httpd.apache.org/docs/current/mod/mod_headers.html link for reference
<IfModule mod_headers.c>
  Header set MyHeader %{X_Environment}e
</IfModule>