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
*/
	public IDataEngine getDataEngine( )
	{
		if ( dataEngine == null )
		{
			openDataEngine( );
		}
		return dataEngine;
	}
	public void closeDataEngine( )
	{
		if ( dataEngine != null )
		{
			dataEngine.shutdown( );
			dataEngine = null;
		}
	}
	/**
	 * @param name
	 * @param value
	 */
	public void setParameterValue( String name, Object value )
	{
		Object parameter = params.get( name );
		if ( parameter instanceof ParameterAttribute )
		{
			( (ParameterAttribute) parameter ).setValue( value );
		}
		else
		{