title: Flexicious Filter not working correctly
body: <p>I'm using a Flexicious Ultimate datagrid for visualising some data.
  I'm using the built in Filter field for some columns.</p>
  
  <p>This is working fine if I don't use any labelfunction on the provided cell data.
  The Flexicious filter data is automatically build from the data in the cells of that specific row. When I use a labelfunction on the cell data the filter values are shown correct, but when I select to show a specific value, the datagrid return 0 records.</p>
  
  <p>Example:
  The dataprover.Price = 25
  In use a currency formatter so the cell data would be €25
  The filter fields of the datagrid show all the different datavalues from all the cells (distinct).
  In this case it would be ALL &amp; €25. When I select to only show the fields with price = €25 the datagrid returns 0 records.</p>
  
  <p>I can't seem to find the correct settings to get this fixed. 
  Is there anyone who can help me with this problem?
  Thanks!</p>