Bug 209309 Show javascript errorposition
If a javascript expression has errors, the error message is shown in the last lines in the preview tab. But there is no info where the error occurs. In most cases you had to guess the error location. It would be very helpfull to display the error location.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
{
			Iterator iter = map.entrySet( ).iterator( );
			while ( iter.hasNext( ) )
			{
				Map.Entry entry = (Map.Entry) iter.next( );
				Object keyObj = entry.getKey( );
				Object value = entry.getValue( );
				if ( keyObj != null )
				{
					String key = keyObj.toString( );
					registerBean( key, value );
				}
			}
		}
	}
	/**
	 * declares a variable in the current scope. The variable is then accessible
	 * through JavaScript.
	 * 
	 * @param name
	 *            variable name
	 * @param value
	 *            variable value
	 */
	public void registerBean( String name, Object value )
	{
		transientBeans.put( name, value );
		scriptContext.registerBean( name, value );
	}
	public void unregisterBean( String name )