passing enum to a method

enum MyEnum1{BUYOPEN, XYZ, ABC};
enum MyEnum2{SCALEOUTTARGET, BCD, EFG};

localDataSeries=getDataSeries();
for (int I=0;i<100;i++){
localDataSeries.setBoolean(i, MyEnum1.BUYOPEN, true);	
localDataSeries.setDouble(i, MyEnum2.SCALEOUTTARGET, 2210.05);
localDataSeries.setInt(i, MyEnum2.BCD, 10);
}
//many more values within localDataseries set using the enums key
.
.
.
}

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Is there a way to reset localDataSeries values (that were set using the enum keys) to null in a mass update way? for example like this
 

		 public void resetDataseriesvalues(DataSeries ds, Enum key){
				 for (int i=0;i<key.values().length;i++)
					 for (int j=0;j<ds.size();j++)
					 ds.setValue(j, key.values()[i],null);
			 }

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resetDataseriesvalues() is not working.