With HSS Option #2....How does the damage work out?

If I hit on all 4 attacks I know that I would be getting a maximum of 4 clix of damage (value)....but as far as the damage dealt would it be as follows with a heavy object?

Attack #1- 1 pt for damage value and 2 pts for hvy obj = 3

Attack #2- 1 pt for damage value and 2 pts hvy obj = 3

So far 6 total clix of damage

Attack #3-1 pt for damage value and 2 pts hvy obj = 3

So far 9 total clix of damage

Attack #4-1 pt for damage value and 2 pts for hvy obj = 3

Total clix damage = 12 clix.

Is this the correct figuring?

Please elaborate!

Once the object is used in the first attack it is destroyed. If you hit with the first attack, the objects damage would be applied to the total at the end of the attack.