title: Row level implementation tableau
body: <p>I got data like below</p>
  
  <pre><code>vendor,Buyer,Region,Amt,qTY
  Rad_1,X,R1,1000,10,5
  Rad_2,Y,R2,1500,20,5
  Admin,X2,R1,2000,30,5
  Rad_4,X3,R3,4000,20,7
  </code></pre>
  
  <p>when vendor Rad_1 logs into tableau server he should be able to see only the 1 &amp; 3 rows because of "R1" Region
  similarly for vendor Admin.</p>
  
  <p>**User should view only data from their own region</p>
  
  <p>How do i implement this ?</p>
  
  <p>i  tried giving this</p>
  
  <p><code>Username()=[vendor]</code>  in calculated field with filter ="true"  but doesnt waork as expected</p>