chart problem

Hi Team,

I've ofcz jar file and kept in lib directory and I tried your example (line.zul) while running i'm getting following error. please help how to resolve this error.

org.zkoss.zk.ui.UiException: Sourced file: inline evaluation of: . . . '' : Error in method invocation: Method setXAxis( jofc2.model.axis.XAxis ) not found in class'jofc2.model.elements.LineChart' : at Line: 65 : in file: inline evaluation of: import ofc.OFC; import jofc2.model.Chart; import j . . . '' : lineChart .setXAxis ( lcXAxis )

Called from method: getLineChart : at Line: 85 : in file: inline evaluation of: import ofc.OFC; import jofc2.model.Chart; import j . . . '' : getLineChart ( ) Called from method: initializeLineChartDataOnCreate : at Line: 99 : in file: inline evaluation of: . . . '' : initializeLineChartDataOnCreate ( )
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

Thanks, &
Dhana