programmatically generate coupon code does not display on admin

Question

I have programmatically generated coupon code, But it does not display on Admin->Promotions->Shopping Cart Price Rules. Why ?

    $coupon = Mage::getModel('salesrule/rule');
    $coupon->setName('testing_name')
   ->setDescription('testing_name')
   ->setFromDate(date('2017-01-01'))
   ->setCouponType(2)
   ->setCouponCode('ASASASASAS')
   ->setUsesPerCoupon(1000)
   ->setUsesPerCustomer(100)
   ->setCustomerGroupIds(array(1)) //an array of customer groupids
   ->setIsActive(1)
   //serialized conditions.  the following examples are empty
   ->setConditionsSerialized('')
   ->setActionsSerialized('')
   ->setStopRulesProcessing(0)
   ->setIsAdvanced(1)
   ->setProductIds('')
   ->setSortOrder(0)
   ->setSimpleAction('by_percent')
   ->setDiscountAmount(100)
   ->setDiscountQty(null)
   ->setDiscountStep('0')
   ->setSimpleFreeShipping('0')
   ->setApplyToShipping('0')
   ->setIsRss(0)
   ->setWebsiteIds(array(1));      
    $coupon->save();

At last print_r($coupon); Will give coupon detail But it not displays admin side.

Answer 1

OMG. Suppose we put exit after $coupon->save();exit; Then it does not display on the admin side. I have removed $coupon->save();exit; then it will appear on the admin side. I think this is not possible anyhow. But still thinking.