Formula not work because some time divide by 0

Hello;
i create a form and in the text field i put this forumla
(:BLK1.A+:BLK1.B)/(:BLK1.Z*100);
but the the field of Z is empty or zero i get error message because it is divid by zero.
can you help

Hi,
You can try,
1) change the formula to
(NVL(:BLK1.A, 0) + NVL(:BLK1.B, 0)) / (NVL(:BLK1.Z, 1) * 100);2) Create a Function in form, and call that function in property palette, and in form function write,
IF NVL(:BLK1.Z, 0) = 0 THEN
       RETURN 0;
  ELSE
       RETURN (NVL(:BLK1.A, 0) + NVL(:BLK1.B, 0)) / (NVL(:BLK1.Z, 0) * 100);
  END IF;Hope this helps.
Regards,
Manu.

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