Hi Nancy,I need your help

I have this SQL statement.I want that tdDateTo(in the AND statement) takes the value of tdDateTo(of the BETWEEN statement).I did try with
{tdDateTo} in the AND statement but the field appears like this{/ /},and not shows the wanted values.
What's wrong in the structure ?

SELECT a.date, a.concept, SUM(a.amount) AS n_impo, a.quotas ;
  FROM Master a ; 
  WHERE BETWEEN(a.date,tdDateFrom,tdDateTo) ;
  OR a.plan = .T. ;   
  AND a.date <= {tdDateTo} ; ---->>>> this 
  AND ALLT(a.quotas) <> "0" ;
  ORDER BY a.date ;
  GROUP BY a.nro_oper ;
  INTO CURSOR c_names

TIA.