I am using the following code to get the Maximum two values of posR from a cursor.

SELECT TOP 2 posR FROM PageTwo ORDER BY posR DESC INTO ARRAY Maxrows
nfisrtposR=Maxrows(1)
nSecondposR=Maxrows(2)

However, i a case I am encountered with a situation where there is no posR in Pagetwo and at that situation my program generates error as Maxrows(1).prg does not exist.

Whats the Problem, How to overcome it ?