Unexxpected Procedure Call (Solved) when variable undefine

[StephenG1CMZ]

In this program, when I forget to define variable KK (it was defined until I split the procedure into two procedures, one omitted here), Running the program seems to execute a WAIT, and when I tap ESC an "ESCAPE" MSGBOX appears.
The KIF MSGBOX only appears if the variable is defined.

Code:


 
 
 EXPORT Precision10 (JJ)
 BEGIN
  //LOCAL KK:=LOG(2);
  MSGBOX(KK);
  PRINT(JJ+": "+(JJ*KK));//NUM OF DEC DIGITS ACCURACY
  //RESULT IS REAL,TRIG MAYBE WORSE
 END;

 EXPORT PREC()
 BEGIN
  PRINT();
  Precision10(53);
MSGBOX("KIF");

 END;