%CHAR Availability

I'm trying to use %CHAR to convert a numeric field to an alpha, and keep getting
a compile error of:

   *RNF0386 30      1 The parameter for %CHAR is not valid.

The statement I'm using is:

   0187.00 C                   Eval      EGWgt  = %CHAR(ShGWgt)

where EGWgt is 14(A) and ShGWgt is 13,3.

While this is a new function for me, it looks pretty self-explanatory ... the
only thing I could think of is that %CHAR
isn't available on our release (V4R3).  Anyone know when this function became
available, or is there something
else obvious that I'm missing?


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