Помогите с выводом в Oracle Reports : Oracle

function CF_barcodeFormula return char is
cursor barcodes(art char) is
	select barcode
	from Supermag.smStoreUnits
	where article = Art;
bar_list varchar2(10000);
begin
	bar_list := '';
	
	for bar in barcodes(:article) loop			
		bar_list := bar_list  || chr(10) || ' - ' || bar.Barcode;			
	end loop;	
	bar_list := ltrim( bar_list, chr(10) ); 
	
	return ( bar_list );
/*exception
	when others then return '';*/
end;