passing criteria argument to the fetchdata() funtion

[venkata.smartclient]

Hi guys,
i applied the criteria as show below. the below code of smartclient didn't applied to the result. please help me to resove my problem to apply criteria in the smartclient.

setDataSource: function(ds,fields){
this.Super('setDataSource', [ds,this.fields]);
this.groupBy("report$_identifier");
this.refreshFields();
this.combineCriteria({
organization: '0'
});
this.fetchData();

}