title: hybris Flexiblesearch - where clause with enums
body: <p>I successfully create and execute a flexiblesearch query with a WHERE clause comparing a custom property, added to CartModel, with a enum value. 
  But I don't know how to "translate" it to try on HAC (just to try and fix it before coding inside a class).
  In my class I've the working code:</p>
  
  <pre><code>String MY_QUERY = "SELECT {" + CartModel.PK + "} FROM {" + CartModel._TYPECODE + "} "
                          + "WHERE " + "( {" + CartModel.RESERVATIONORDERSTATUS + "} = ?reservedOnHybris)";
  </code></pre>
  
  <p>And I set the <strong>reservedOnHybris</strong> parameter with </p>
  
  <pre><code>  searchQuery.addQueryParameter("reservedOnHybris", ReservationOrderStatus.INITIAL_STATUS);
  </code></pre>
  
  <p>How can I translate this to try it on the FlexibleSearch panel in the HAC?
  Thanks in advance.</p>
  
  <p>Ale</p>