title: dojo enhanced grid filter - programatically set column A greater than some number
body: <p>I'm trying to set a filter on a dojo grid programatically so that some column be greater than some number.<br>
  I have a quantity column and I wish to set a filter so that quantity be greater (or different) than zero.</p>
  
  <p>Thanks!</p>
  
  <p>So the code would look like this:</p>
  
  <pre><code>dojo.require("dojox.grid.EnhancedGrid");
  var storage = new dojo.data.ItemFileWriteStore({data: data});
  var layout = [ { field: 'id', name: '# ID', width: '60px' },
                 { field: 'name', name: 'Nume produs', width: '200px' },
                 { field: 'qty', name: 'QTY', alwaysEditing: true, editable: true }
  ];
  var grid = new dojox.grid.EnhancedGrid({
      store: storage,
      structure: layout,
      plugins: { filter : true },
  }, 'grid');
  grid.startup();
  </code></pre>
  
  <p>I'm guessing I should do a filter or a query but I really don't know how to compare two things, the only thing I found out is that I can use a query with RegEx but.. that's all</p>