i am using AChartEngine library for android and i am drawing a chart using SalesComparisonChart class. but i noticed that the lines drawn does not reach the same value in number, it is drawn below the exact value like below in the photo . in category Oriental the value is 3608 and 4358 but the lines are below those values. Can someone help me ?

Please create an issue in the AChartEngine issue tracker.
Until this will be fixed you can use LineChart instead of the cubic line chart or you can add custom annotations.