Google multiple size and colour

Hi

I am using nopFeedManager to export our Google merchant centre xml file.

I seems to work well for products of one size and color but it does not automatically run through all the size and colour options.

We are using Spec.: Size and Spec.: Colour and would expect about 5000 variations but only get 900.

Is this something that you are looking into or am I missing a setting?

Thanks

Peter

1. Do you use product specification? one product has one color and one size
or do you use product attributes? each product has several colors and sizes
2. Do you use product combinations?