The image cannot be automatically replaced with the product main image.

We’ve encountered a problem. We’ve used your plugin to set the image for the Custom Attribute, and the image is displaying, but all attributes must be selected before we can change the main product image. I’d like to ask how to set it up so that clicking the Custom Attribute image directly changes the product theme, even without clicking the global Size attribute?
The image settings link is already included in the Site Information content.