Select variants on product page issue

-- HikaShop version -- : 2.6.0
-- Joomla version -- : 3.5.1

Hi
There's an issue with variant products. here it goes.
imagine i have a main product and it has two variants.

variant 1 => color: blue | size: 4.5
variant 2 => color: red | size: 5

in product page, I use dropdown to display characteristics and I want if the color is 'blue' the only option available for size be 4.5, or option with value 5 become disabled somehow. because we don't have a variant with color: blue & size: 5. by default it shows the main product specifications.

so how to do that?

Thanks in advance.

Now you can load the Product varaint dynamically based on the color 's size available.
I created a plugin for that check t http://www.walkswithme.net/how-to-load-hikashop-product-variant-dynamicallyhis one .