I'm using the Products URLs module to link to individual product variations instead of the default one in commerce kickstart. So my product url looks like:

nwebshop.dev/nl/shoes/anika-3?sku=ANIKAWIT437

In the custom view I show product information related to the product variation in the product display but it shows the information 4 times (since I have 4 variations for product anika-3)

I already have a contextual filter applied based on content:Nid using 'Content ID from URL' als filter type.

What I need (I think) is an additional contextual filter on Commerce Product:SKU, but I don't know which filter type to apply. There is an option to use PHP code or use Raw value from URL, but I don't know how.

I appreciate your help on this, thanks!

Jochen