PLAYER::GET_PLAYER_NAME

[ZrioXoirZ]

Hello Guyz
First my code I'm using

void ZRIOMENU_MENU_13()
{
ZRIOMENU_DRAW_4("~o~PLAYERS");

for (int i = 0; i < 30; i++)
{
ZRIOMENU_OPTION_1(PLAYER::GET_PLAYER_NAME(i)); //ADD OPTION
}
if (ZRIOMENU_OPTION_12 && PLAYER::IS_PLAYER_PLAYING(ZRIOMENU_OPTION_10 - 1))
{
ZRIOMENU_INFORMATION_1 = ZRIOMENU_OPTION_10 - 1; //SELECTED PLAYER
ZRIOMENU_MENU_1(11); //SUB MENU
}

ZRIOMENU_MENU_NORMAL_1();
}

So and u know if there is no player name u get **invalid** as answer but how can I change **invalid** to something different?