[flexcoders] Apply filterFunction to datagrid XMLListCollection dataprovider question

[chigwell23]

private function filterRepRankDtlChnl(item:Object):Boolean{
   if(item.results.record.chnl_cd == "PREM") return true;
   else return false;      
}

Filter is not filtering and I think it maybe item.results.record.chnl_cd - the 
item:Object is in this format:

item
...<results>
......<record>
.........<chnl_cd>
.........<rep_nm> etc

What is the correct "path" for chnl_cd and might this be the problem? TIA,

Mic.