[PrinceKumar]

If you are asking that::
if u have a fs so how can you change it in gamemode then do these things....::::::::::::::

Find for #if defined FILTERSCRIPT and then delete it ... And also delete its closing #endif
:::::::::::::::
Create :::
main() //type it before on gamemodeinit or every public function
{
//here console prints..
}
::::::::::
then replace filterscriptinit/filterscriptexit respectively with gamemodeinit/gamemodeexit