Including variant options in the comment
For mobile viewers of your live sale, they may not want to leave your live video to go answer a question about size or color after they commented.
To avoid this, you can have them comment with the variant option in the comment itself.
So commenting "101 large blue" will avoid the questions about size and color, and just cart the large blue variant of the product numbered 101. The shopper gets invoiced automatically and doesn't need to leave your live sale.
You can play around with different comments on our demo.
Currently the order of the variant options matters. We expect the comment order to follow the order of variants defined in Shopify for your product. So if size is the 1st variant and color is the 2nd, the comment needs to be "101 small red" and not "sold 101 red small". Let us know if this is an issue, and we can look into enabling any order for you.