Bug 143671 [Linux-As][Smoke]Parameter can't be used.
Details: [Linux-As]Parameter can't be used. Setp: 1.New a report design. 2.New a paremeter. 3.Preview and click Run Report Parameter. 4.Dialog pop up and press OK. Actual resutl: Report error.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
if ( parameter == null )
				continue;
			String paramName = parameter.getName( );
			Object paramValueObj = parametersAsString.get( paramName );
			if ( paramValueObj != null )
			{
				
				try
				{
					paramValueObj = ParameterValidationUtil.validate( parameter
							.getDataType( ), parameter.getPattern( ),
							paramValueObj.toString( ), locale );
					params.put( paramName, paramValueObj );
				}
				catch ( ValidationValueException e )
				{
					
					if ( ParameterAccessor.SERVLET_PATH_RUN
							.equalsIgnoreCase( request.getServletPath( ) ) )
					{
						this.exception = e;
						break;
					}
				}
			}
		}
		return params;
	}
	/**