v5r2 %dec using character argument causing RNQ0105

On v5r2, trying to use %dec to convert a numeric expression in an alpha field 
to a numeric, but am
getting RNQ0105: "A character representation of a numeric value is in error".  
I found no APARs
for this.  Any help would be appreciated!

Here is the relevent code:
  FWIPlist   if   f  132        disk
  FPD14WL#   o    e             disk
  IWIPlist   ns                     
  I                                105  117  wl_@xxxxxx
  I                                118  132  wl_estamt 
  C                   Dou       *inLR      
  C                   Read      WIPlist                                LR
  C                   If        not *inLR  
  c                   Select               
  c                   When      wl_@xxxxxx = 'ESTIMATE AMT:'
  c                   Eval      w#_estamt = %dec( %trim(wl_estamt) : 13 : 2 )

Here is the relevent parts of the dump:
 NAME                  ATTRIBUTES           VALUE
 W#_ESTAMT             PACKED(15,2)         0000000000000.00 
 WL_@xxxxxx            CHAR(13)             'ESTIMATE AMT:'
 WL_ESTAMT             CHAR(15)             '       3,793.00'
            VALUE IN HEX         '40404040404040F36BF7F9F34BF0F0'X


TIA, Dan

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