Hi @SerPounce
Can we store item#, item title, and quantity at once using Custom State?
and pull out one of items then increase or decrease the quantity of the item when an user clicks either up- arrow button or down-arrow button?

I think there must be a simple solution. Because it is very basic function that a lot of people need to use in order to deal with their data in real.
Right?

It is like just printing out, in a text box, a list of basket items(its title and quantity together, not separately) which stored in Basket (which contains the basket items).

But I cannot find… I will do more to find.
Thank you for trying to help me @SerPounce