So I have created a custom option slider like the vanilla ones but instead of it using it for floats I am using it for integers, all is working but one thing, when I click and drag it, it changes the option, but when I close the gui and open it back up, the value never changed to the dragged value, but to the value I clicked on. What I am wondering is how to fix this.

 

Here is my slider code: http://pastebin.com/cvTsTcmz

Any help?