Change a float value with the horizontal axis?

I got a touch panel in which there is the TouchPad script (form Unity Standard Assets) . This script only allows the horizontal axis to be changed (min is -1 and max is 1). I want to change a float value (smoothly) to -180 when at minimum and 180 when at maximum. This variable is used in a camera rotation script (which works fine).

How can I do this?

Nevermind , I got it. It was simpler than I thought.

All you have to do is check if the horizontal axis is greater or lower than 0. A script example down here.

using System.Collections;
using System.Collections.Generic;
using UnityStandardAssets.CrossPlatformInput;
using UnityStandardAssets.Utility;
using UnityEngine;

public class increaseNumByTouch: MonoBehaviour {
	float horizontal;
    float thenumberyouwanttoincrease; 
	void Update () {
		horizontal = CrossPlatformInputManager.GetAxis ("Horizontal");
			if (horizontal > 0) {
			thenumberyouwanttoincrease += 5;
		} else if (horizontal < 0) {
			thenumberyouwanttoincrease += -5;