title: Robot Framework: Generating Unique Random number
body: <p>I have to generate unique random numbers in robot framework. I have used "Generate Random String" to get random numbers. Command: </p>
  
  <pre><code>${random}   Generate Random String  1   [NUMBERS])
  </code></pre>
  
  <p>I gave the above statement in a for loop. Now I am able to get 'n' random numbers. But they are not unique. How do I make them unique?</p>
  
  <p>Whats my case exactly: I want four unique random numbers ranging from 1 to 10. I am trying to give the generate random number command in for loop and in the second loop i am trying to compare it with first random value and so on. But this is not working.</p>
  
  <p>Is there any simple logic to get 4 unique random numbers between 1 to 10?</p>
  
  <p>Thanks in advance.</p>