title: Why I cant use Random.Range code system on Unity 2D
body: <p>I was using this code in unity 2D:</p>
  <pre><code>    float nilaiRandom;
      void Start()
      {
          nilaiRandom = Random.Range(1.11f, -1.88f);
          transform.position = new Vector2(transform.position.x, nilaiRandom);
      }
  </code></pre>
  <p>Unity count Error it says:<code>Assets\Go.cs(14,23): error CS0104: 'Random' is an ambiguous reference between 'UnityEngine.Random' and 'System.Random'</code>
  What actually happened to my unity and what is the solution? please help me</p>