Bug 120503 Cascading Parameter can not drop into layout
Details: Cascading Parameter can not drop into layout Step: 1.Open a report design and Create a Sample Data Source and data set by "select * from CLASSICMODELS.CUSTOMERS" 2.New a cascading parameter and create CUSTOMERSNUMBER and CUSTOMERSNAME in parameter named number and name. Press OK 3.Drop parameter name into layout. Actual results: The parameter in Cascading Parameter Group can not drop to layout
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
DesignChoiceConstants.UNITS_IN ).getMeasure( );
		}
		return MetricUtility.inchToPixel( px );
	}
	/**
	 * Transform other units to target unit.
	 * 
	 * @param handle
	 * @param targetUnit
	 * @return
	 */
	public static double convertToValue( DimensionHandle handle,
			String targetUnit )
	{
		double retValue = 0.0;
		if ( handle.isSet( ) )
		{
			retValue = DimensionUtil.convertTo( handle.getMeasure( ),
					handle.getUnits( ), targetUnit ).getMeasure( );
		}
		return retValue;
	}
	/**
	 * Checks if the value can be converted to a valid Integer.
	 * 
	 * @param val
	 * @return true if the value can be converted to a valid Integer, else
	 *         false.
	 */
	public static boolean isValidInteger( String val )