Trying to freeze players after the plugin does sv_restart 1

[tom1kHF]

Hello. Im new to scripting plugins, so basically i managed to make a plugin and what i want to do is this: When the plugin does sv_restart 1 and round restarts, i want all people to be freezed. Currently i have this

set_user_frozen( id, bool:bFrozen ) {

    if( bFrozen ) 
    set_pev( id, pev_flags, pev( id, pev_flags ) | FL_FROZEN ) ;

    set_pev( id, pev_flags, pev( id, pev_flags ) & ~ FL_FROZEN ) ;
}

But its only slowing down players, not actually freezing them. I want the effect as mp_freezetime 50 for example,not be able to shoot/move.