Wix install path registry value assignment - what is wrong?

Question

I have an WIX installer. I try to add a registry key depending on the installation path (VS Installer easy) in this case thought it would be a piece of cake ... This is my XML for WIX:

<Feature Id="ProductFeature" Title="ChessBarInfoSetup" Level="1">
        <!--<ComponentGroupRef Id="ProductComponents" />-->
  <ComponentRef Id='InstallRegistryComponent' />
  <ComponentRef Id='ProductComponent' />
    </Feature>
</Product>

<Fragment>
    <Directory Id="TARGETDIR" Name="SourceDir">
        <Directory Id="ProgramFilesFolder">
    <Directory Id="ManufacturerFolder" Name="$(var.manufacturer)">
      <Directory Id="INSTALLFOLDER" Name="$(var.productName)">

        <!--<ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">-->
          <Component Id="InstallRegistryComponent" Guid="*">
            <RegistryKey Id='ChessInfoBarInstallDir' Root='HKLM' Key='Software\[Manufacturer]\[ProductName]' Action='createAndRemoveOnUninstall'>
              <RegistryValue Type='string' Name='InstallDir' Value="[INSTALLDIR]" Action="write" KeyPath="yes" />
              <!--<RegistryValue Type='integer' Name='Flag' Value='0'/>-->
            </RegistryKey>
          </Component>
          <!-- TODO: Remove the comments around this Component element and the ComponentRef below in order to add resources to this installer. -->
          <Component Id="ProductComponent" Guid="*">
            <File Source="$(var.ChessInfoTaskBar.TargetPath)" />
          </Component>
        <!--</ComponentGroup>-->

      </Directory>
    </Directory>
        </Directory> 
</Directory>
</Fragment>

The value is created but is always an empty string. Tried it with INSTALLLOCATION and others... What am I doing wrong (saw the Value=[INSTALLDIR] on a wix tutorial page)?

Answer 1

It is empty because you are using INSTALLDIR instead of INSTALLFOLDER

<Directory Id="INSTALLFOLDER" Name="$(var.productName)">

<RegistryValue Type='string' Name='InstallDir' Value="[INSTALLFOLDER]" />

That should give you the installation directory.