shipping for second variant are not calculated

I thought i do it right
The shipping cost for different product is ok at checkout..
But when i add the same product with different variant the shipping cost not calculated all the shipping price in cart.

I am using this formula for shipping cost:
1item - Fee
2items - Free
3items - Rm11
4items - Rm13
5items - Rm21
6items - Rm22
7items - Rm22
8items - Rm22
9items - Rm29
10items - Rm32

Here the attachment..
problem.JPG

my expected result for shipping price is RM29.what should I do.Please help me

hi, someone can help solve this problem.

if you want to look up my setting i can give the details.

Hi Nicholas,

here I attached screenshot of the settings for your shipping methods and a screenshot of the settings of the main product and the variants.

thanks.

Hello,

Can you also show us through some screenshots how you configured your checkout workflow via "Hikashop->System->Configuration->Checkout" ?

Thank you.