Make a variable within a blueprint

I have a game, and I could not find out how to make a new variable with blueprints, if needed. What I mean by this is if I had an integer storing data, and I needed a new integer when a user presses a button, how can I create a variable after the game already started? I do not want to have a bunch of blank variables.

You could use an array, There’s no way to change class structure on runtime, but arrays are dynamic.

Ok, thanks! I made an array, but how can I get each number in the array as a different integer (list of integers)?

What if you used a local variable in a function?

302287-contains.jpg

etc… If you just want a list of integers:

thanks, that’s what I wanted

But what if I wanted to find a spisific number in that set (for example I wanted to get the 4th number?

302301-4th-number.jpg