Как отключить звук и текст в чате после броска гранаты?

#include <amxmodx>

#define PLUGIN "Block 'Fire in the hole!'"
#define VERSION "1.0"
#define AUTHOR "Admin"

public plugin_init() {
    register_plugin( PLUGIN, VERSION, AUTHOR )
    register_message( get_user_msgid( "TextMsg" ), "TextMsgHandler" )
}

public TextMsgHandler( msgid, dest, receiver ) {
    #define ARG_DESTINATION_TYPE  1
    #define print_radio           5
    #define ARG_RADIO_STRING      5

    static const szFireInTheHole[] = "#Fire_in_the_hole"
    static szMsg[18]

    if( get_msg_arg_int(ARG_DESTINATION_TYPE) != print_radio )
        return PLUGIN_CONTINUE

    get_msg_arg_string( ARG_RADIO_STRING, szMsg, charsmax(szMsg) )
    if( !strcmp( szMsg, szFireInTheHole ) )
        return PLUGIN_HANDLED

    return PLUGIN_CONTINUE
}