import variation problem with "0" attributes

Hello, I’ve bought the “import variations” ADD-on. I need to import product variations with possible values from 0 to 9. When I set the value 0 to one variation, that value isn’t set to the variation so I can choose only from 1 to 9
Here’s a screenshot

Thanks

https://ww.wp.xz.cn/plugins/woocommerce-csvimport/