Pavel,
The solution is to assign R to another variable. I've also re-structured your code to make things clearer (IMHO).

$PK
IF (ICALL.EQ.4) THEN ; only one ICALL.EQ.4 block is needed
   IF (NEWIND.NE.2) THEN
      CALL RANDOM(2,R)
      UNUM=R ; save R value in a new variable
   ENDIF
   IF (UNUM.LE.0.1855) THEN ; only 1 logical test is required
     HM=1
   ELSE
     HM=0
   ENDIF
ENDIF

On 27/03/2014 11:23 a.m., Pavel Belo wrote:
 Hello NONMEM73 Users,
I try to use call random:
$PK
IF (ICALL.EQ.4.AND.NEWIND.NE.2) CALL RANDOM(2,R)
IF (ICALL.EQ.4.AND.R.LE.0.1855) HM=1
IF (ICALL.EQ.4.AND.R.GT.0.1855) HM=0
It does not matter how I try to code it, I am receiving the same error message:
372  "R" IN CALL RANDOM MAY NOT BE USED GLOBALLY IN ANOTHER BLOCK.
What is wrong with with it?
Thank you,
Pavel

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