How to add products to the cart with a simple link

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I was able to insert a simple product, but products with variables I still haven’t been able to, I’ve tried that way by putting the attribute ID and attribute name, but it didn’t work out:

https://www.rlcarvalho.com/carrinho/?add-to-cart=6337&quantity=300&attribute_pa_ta Size=241&attribute_pa_estampa=930

https://www.rlcarvalho.com/carrinho/?add-to-cart=6337&quantity=300&attribute_pa_tahamento=casal&attribute_pa_estampa=amon-bege

Does anyone have a LIGHT?