item in inventory to something item

prontera,155,181,5	script	Sample#exchange	4_F_KAFRA1,{

	mes "Exchange these item?";
	for ( .@i = 0; .@i < .item_size; .@i++ ) {
		mes " > "+ getitemname( .item[.@i] );
	}
	if ( select( "Exchange","Cancel" ) == 1 ) {
		for ( .@i = 0; .@i < .item_size; .@i++ ) {
			.@count = countitem( .item[.@i] );
			if ( .@count ) {
				delitem .item[.@i],.@count;
				.@total += .@count;
			}
		}
		getitem .reward, .@total;
		mes "Exchanged "+.@total+"x items to "+.@total+"x "+getitemname( .reward );
	}
	close;

	OnInit:
		.reward = 909;
		setarray .item,512,506,507,508,509;
		.item_size = getarraysize( .item );
		end;

}