title: How to Create Multi-Valued List in Team Foundation Server/Microsoft Test Manager?
body: <p>I am working on VSTS 2010 and using Microsoft Test Manager to manage our team's test cases. I just want to add a custom field for Test Categories (with values like BVT, FVT, Regression etc..) to the existing Test case template by following the steps <a href="http://www.dotnetcurry.com/ShowArticle.aspx?ID=755" rel="nofollow">here</a> and <a href="http://blogs.msdn.com/b/vstsqualitytools/archive/2011/09/21/customize-your-test-case-work-item-template-to-enable-query-on-test-suites-test-plans-test-categories-and-execution-statistics.aspx" rel="nofollow">here</a>. But I am not able to select multiple values. I am able to create a drop down list with one of these values can be selected but not more than one. but since a test case can be part of more than one test category, how can I make this possible?</p>
  
  <p>My steps:</p>
  
  <ol>
  <li>In Process Editor, Work item types I Create a new field called Test Category with Ref Name as MyCustomField</li>
  <li>In Rules, I selected AllowedValues as BVT, FVT, Regression.</li>
  <li>After that, In Layout tab created a new control with name Test Categories
  4.The field name of the control is set to MyCustomField</li>
  <li>When I checked in MTM to create a new test case, the control is showing as drop down instead of one that was shown <a href="http://blogs.msdn.com/b/vstsqualitytools/archive/2011/09/21/customize-your-test-case-work-item-template-to-enable-query-on-test-suites-test-plans-test-categories-and-execution-statistics.aspx" rel="nofollow">here</a></li>
  </ol>