Dragable Slider with a gamepad?

Using the Slider extension I currently have it working well with a mouse to drag the thumb on the Slider. I need to know how this can also be achieved with a gamepad? For example I have a custom menu cursor the player uses in game instead of the regular mouse cursor.
So with a gamepad i would like it so when the custom menu cursor is “inside” the thumb of the slider, “A” on the gamepad is being pressed (trigger once) and force is being applied to the “left” stick of the gamepad, it will drag the thumb of the slider and change the value of the slider

Yes it can be, just Subtract/Add the value when you press Left/Right