From MSI to WiX, Part 23 - DLL Custom Actions - Logging and setting propertieshttp://blogs.technet.com/alexshev/archive/2009/05/16/from-msi-to-wix-part-23-dll-custom-actions-logging-and-setting-properties.aspxLet's start with setting property value using MSI API MsiSetProperty . This function takes three parameters: An installation handle, originally passed to custom action's function by Windows Installer. Name of the property to set or remove. New value forru-RUCommunityServer 2.1 SP1 (Build: 61025.2)