how to get a multiple choice options?

[mi4]

I would like to select more than one option but it doesn't work. I don't know which part of coding is wrong. It is autoload when I select the option. Anyone can help?

Size
O S
O M
Color
O red
O white

I select s and red it works. However, it doesn't work when I select s,m and red.  

I post the script via this linkhttps://stackoverflow.com/questions/68169575/how-can-i-select-more-than-one-option-in-sidebar-filter...

[iDoThemes]

With group filtering based on tags

https://shopify.dev/tutorials/customize-theme-filter-collections-with-product-tags

https://support.milehighthemes.com/hc/en-us/articles/360020145033-How-do-I-setup-group-filtering-on-...

I think the Supply theme does this out of the box which you can use as a reference.