[Arkshine]

I would suggest to use a bound to make sure value is either 0 or 1. Also, since you have one cvar, making a private function is not really needed.

For example :

PHP Code:

new Catch_Enable;

public plugin_init()
{
    new handleCvarStatus = CvarRegister( "amx_catch_enable", "1", .hasMin = true, .minValue = 0.0, .hasMax = true, .maxValue = 1.0, .forceInterval = false );
    CvarHookChange( handleCvarStatus, "Catch_Cvar" );
}
public Catch_Cvar( const handleCvar, const oldValue[], const newValue[], const cvarName[] )
{
    Catch_Enable = ( newValue[ 0 ] == '1' );
    client_print( 0, print_chat, "Catchmod is now %s", Catch_Enable ? "ON" : "OFF" );
    
    server_cmd( "sv_restart 1" );
}