Product variables

Hi,

I’m wondering if someone can help. We are still using Jigoshop 1.x and are having issues with the product variation settings

Jigoshop / Products / Specific product / Product Data / Variations

In the variations, we have our the products listed in different sizes (e.g 20, 40, 60, 120, 500, 1000).

Is there any setting that can make these show on the website site in the correct size order? They are currently showing in a random order on 200+ product lines (e.g 500/20/40/60/120/1000) and I wondered if there was a quick fix rather than having to manually change all products?

Any help would be much appreciated!