Data structure operation valid in V5R1 not allowed in V5R2?

One of our programmers brought me a program created under V5R1 needing a
seemingly simple change.

The program includes this data structure:
D Stat            DS                  Occurs( 20 ) Qualified
D  WeekDay                       3a   Inz                   
D  Scanned                       7p 0 Inz                   
D  Ques                          7p 0 Inz Dim( 11 )         
D  Funded                        7p 0 Inz           

After performing the necessary calculations the contents of Ques is printed
as follows:
O          E            DETAIL      1  1      
O                       RptDate             10
O                       Stat.WeekDay        16
O                       Stat.Scanned  Z     26
O                       Stat.Ques( 1 )Z     35
O                       Stat.Ques( 2 )Z     43
O                       Stat.Ques( 3 )Z     51
O                       Stat.Ques( 4 )Z     59
O                       Stat.Ques( 5 )Z     67
O                       Stat.Ques( 6 )Z     75
O                       Stat.Ques( 7 )Z     83
O                       Stat.Ques( 8 )Z     91
O                       Stat.Ques( 9 )Z     99
O                       Stat.Ques( 10)Z    107
O                       Stat.Ques( 11)Z    115
O                       Stat.Funded   Z    123       

The issue is the program won't compile.  The compiler issues RNF6051 for
each output spec using Stat.Ques.  The program was created under V5R1 and
currently runs in production.  If I change the target release to V5R1 it
compiles.  Trying to compile at V5R2 generates the errors.  Reading through
the RPG manual for the data structure changes hasn't given me any insight.  

Does anyone have any ideas what we're doing wrong?

TIA,

Rick