Deefinition of "stack" and "quantity"
Guys what do you mean when you say "stack" ? Is it the number of stacks or ow many in a stack? And again, what do you mean when you say "quantity" ?
I propose you use "stacks" to mean how many stacks and "size" or better "stack size" for the obvious "how many in the stack". maybe English is not your first language but "stack" means "a bunch of items placed on top of each other". It does not mean how many items are in the stack. And "quantity" means "how many of " but it is not clear if it refers to the "stacks" or to the size of each stack...
For general questions like this, I’d suggest joining our Discord server: https://discord.gg/FJ4877H