将多个“样品转换为可变产品”

Is there a easy way to change the Product Data type for 1,000 Products from "Sample Products" to "Variable Products" ?

In the WordPress > Woocommerce > Under Products Tab > Filter the required category of products and choose Bulk Edit.

I do not see an option to change the "Product Date Type" from Sample Products to Variable Products.

Is there a easy way to do it for multiple products?