title: Ext JS 4 - Grid instances sharing the same store
body: <p>I got a problem that is simply driving me insane. I created a window based widget that displays a grid. Ok, until now that is nothing special, but, each grid has to deal with different data. For Example: Imagine a homebroker, there is the widget that show the offers of a stock. So, the instance A has to show INTC, instance B has to show CSCO and instance C has to show FB. But when I deal with the data of INTC for instance A, the grids of instances B and C are updated too. So I understand that all grid a sharing the same store. 
  I've already tried to create a store dinamically, but, it didn't work.</p>
  
  <p>The question is, how do I do to separate this? There is another way to update a grid without stores?</p>