RANDOM function with COBOL400?

Newbie question.

I have to generate a list of randomly selected
employees for drug testing.  I was thinking of using
the RANDOM function.  Unless someone has a better
idea! :)

I can't seem to get the RANDOM function coded
properly.  When I code the following line using SEU:

     COMPUTE X = FUNCTION RANDOM.

SEU highlights the line and gives the following error
message:

"ANS COBOL reserved word FUNCTION will be accepted as
a nonreserved word. A period is required before
RANDOM. Line rejected."

I tried coding the variation:

    COMPUTE X = RANDOM.

and got the error message:

"RANDOM not arithmetic expression. Line rejected."

What am I missing here?  How do I use the RANDOM
function in COBOL400?

Thanks in advance.
Kelly


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