I need help with auto sorting/slotting system

[Onoille]

So I don’t know if you remember me but I made a post a few days ago here it is:

I need help with saving character's exp

So I’m trying to do an inventory system with summoning like All Star Tower Defense, I’ve made it so it saves the characters you get but I don’t know how I would do it so it creates a NumberValue and gives the value of exp it had when it saved. I’ve looked for any solutions, haven’t found any. So what I thought could work is to make a table where it stores the character’s name and the exp so when you join it knows where to add the exp. Here’s how I save them https://gyazo.com/3672121550f535…

and thanks to @heII_ish I could finally fix it, anyways now onto the main problem
So I’m trying to do an auto slotting/sorting system.
Let me explain for every character inside the inventory folder a NumberValue called Slot, is created
I wanna have it so it auto gives a slot, so if there was already a character created before this one this one’s value would be 2 and the other 1, but if I deleted the first one it auto-updated to 1.

https://gyazo.com/a6b9df0680cec273b136be1cfa9bd20c This is just a pre-view.

I know it is a bit confusing sorry about that.

[Onoille]

I’ll bump this so you can help me.

[CoderHusk]

You could probably use a stack data structure to do this

[Onoille]

What is stack data exactly, could you explain to me if it’s not too big of a burden.

[CoderHusk]

I’ve actually made a video on this, so ill just let me past self explain

[Onoille]

Ok so after having had a look at it, it does seem like it would work but, I don’t know how I would implement it, could we talk more in-depth on discord?