[bastimuc]

is it also possible to filter by attr ?
like this

<block type="slider/list" name="slider_tab1">
 <action method="setConfig">
  <name>
   <title>Men</title>
   <product_order_by>created_at</product_order_by>
   <product_filter_by>new_product_slider</product_filter_by>
   <pretext></pretext>
  </name>
 </action>
 <action method="addToParentGroup"><group>custom_tabs</group></action>
</block>

this is but not working , the products are not filtered