jsf 2 - Force reload image jsf -

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I would like to display an HTML file to a graphic image in a Jesf Web applications that change for each run. The problem is that the displayed image was always the same.

I tried to solve it by generating a random number at the end of the name. 

  public string getImageId () {string imageId = ""; Int nb = (int) Math.random (); ImageId = "? Id =" + integer .ststring (nb); Return image iid; }   
 Then, I call it on my jsf page  
  & lt; H: Graphic image value = "/ images / report.html_files / img_0_0_0 # {MyBean .imageId}" cacheable = "false" / & gt;   
 But nothing changes.  
 Do you have any information about it? Thank you   
 
 
 For my application, I created a Java sublet that gives a different image each time, top to prevent caching with articles  cache-Control  set and I use the servlet URL in your JSF tags.  
 I do not think you can dynamically change the image with a URL in a fixed file, like in your example.

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