Obsolete variable; retained only for backwards compatibility with MSI projects imported from Tarma ExpertInstall. The variable contains the name of the user performing the installation. InstallMate does not use this variable; it uses the LogonUser variable instead. However, because USERNAME is defined as <LogonUser>, you can use it in InstallMate packages if compatibility with Windows Installer is required. Be sure to check its Include in installer box in the Symbolic Variable attributes pane in that case.
You can refer to this variable as <USERNAME>. We recommend that you leave this variable at its default value of <LogonUser>.