switch(.card_amount[.i]) {
case 50:	set .card_amount[.i], 500;	break;
case 90:	set .card_amount[.i], 900;	break;
case 150:	set .card_amount[.i], 1500;	break;
case 300:	set .card_amount[.i], 3000;	break;
case 500:	set .card_amount[.i], 5000;	break;
case 1000:	set .card_amount[.i], 10000;	break;
}