Array not being reacting using pinia and options API

[booleanaVillegas]

Hello Vue comunnity, i'm currently trying to work with pinia store, but i havent been able to get it to work
I used the "counter" example created with the vue boilerplate but when i try to reproduce it with an array, the values were not updating in real time. I added an object to the array and it didn't show the updated array on the rendered page, but when i use the counter it does work, when i console.logged the array , the object was indeed added, i think i need to add something else to my component but now sure what it is.

Refer here to the: neWProduct method: https://github.com/booleanaVillegas/pinia-test/blob/master/src/stores/products.js

and here to where i'm implementing the store: https://github.com/booleanaVillegas/pinia-test/blob/master/src/views/AboutView.vue

[booleanaVillegas]

Update: I had 2 errors, first i was using "setup()" method in options api, even though pinia said it was okay, it didn't work properly

also, when i change the Store declaration to the "options" store instead i started working immediatelly, not sure why