Bug 151381 [Smoke]The parameter didn't display in the web viewer
Description: Preview a parameter in the web viewer, it can't be previewed. Step to reproduce: 1. new a report and a parameter 2. drag it to the layout 3. preview it in the web viewer Actual result: the parameter is not displayed
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
value = new BigDecimal( stringValue );
					}
					catch ( NumberFormatException e2 )
					{
						try
						{
							
							value = toDate( stringValue );
						}
						catch ( BirtException e3 )
						{
							value = evaValue;
						}
					}
				}
			}
		}
		return value;
	}
	/**
	 * convert object to Integer. If fails, return null. 
	 * Object -> Integer
	 */
	public static Integer toIntegerValue( Object evaValue )
	{
		
		Integer value = null;
		if ( evaValue instanceof String )
		{