insert batch with group checkbox

I'm not really getting on what you're trying to achieve. Makes no sense to me that the checkbox value is always the same.

Maybe if you provide the entire form HTML for more context and explain what you're really trying to do we could help you better.

Hi Marco, thanks for help me. I would like use the checkbox for select the preview images. The preview images should have a value 1 the others 0.

Why don't you pass Product id to checkbox instead 1 for all