Link Arrow in the query generator report

Hi,

if i use a query with grouping and renaming the column, the link arrow does now work.

by example (just an example):

SELECT T0.CardCode as 'Customer Code',t1.phone1 as 'Phone', sum(T0.DocTotal) as 'Total Sales' FROM OINV T0 INNER JOIN OCRD T1 ON T0.CardCode = T1.CardCode

group by t0.cardcode,t1.phone1

in this case the link arrow near to the customer code doesn't work.

any body know why??

thank you.