Define a specific default variant in "add product" page

Dear All,

I’m always must create Variants fields is “size” and list option value is “0.5 yards, 1.0 yards, 1.5 yards, 2.0 yards“ in “add page” and with each Variant i must input the price & available value

so how can i set the default variant is “Size” and list default value? please help me if you know! thank & best regards.

Are your metafields set up properly to match your variants? If no, you absolutely will continue to set up variants manually often as that sucks. So let me know if you need assistance on creating your metafields accordingly