To limit the package to one application within a product specify the applicationName as well as the productName. Specifying just the product name will cause the package to contain all applications for the specified product.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2