Android Question CustomListView work with array

Hi,

I can work with array of clv?
When I try to add a panel in the CLV(2) I have the Sub Asview error:
java.lang.NullPointerException: Attempt to read from field 'int android.view.ViewGroup$LayoutParams.width' on a null object reference

I can know the CLV panel position with the method javaobject?
similar to jo.RunMethod("getFirstVisiblePosition", Null) for listview.

thanks