Bug 142404 [smoke][regression] dynamic parameter does not work properly
steps to reproduce: - create a report - create a data source - create a data set using the data set - create a dynamic parameter bound to the data set - preview report expected behavior: - dynamic parameter works properly actual behavior: - it simply didn't, there are no values listed in drop down box
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/GetParameterDefinitionTask.java
{
		String label;
		Object value;
		SelectionChoice( String label, Object value )
		{
			this.label = label;
			this.value = value;
		}
		public String getLabel( )
		{
			return this.label;
		}
		public Object getValue( )
		{
			return this.value;
		}
	}
	
	public void close( )
	{
		if ( dataCache != null )
		{
			Iterator it = dataCache.entrySet( ).iterator( );
	        while (it.hasNext())