[wix-users] Problem with Target Directory

[Marco Wittwer]

Hello

I have a problem with the target directory. Here a part of my Product.wxs:

    <Directory Id="TARGETDIR" Name="SourceDir">
      <Directory Id="ProgramFilesFolder">
        <Directory Id="INSTALLFOLDER" Name="MySoftware">
          <Component Id="ProductComponent" Guid=" CA05F0CD-42DB-4DF9-8750-EA91F40A9365">
            <File Source="$(var.MySoftware.TargetDir)mysoftware.dll" />

When when I call the msi with the command
msiexec /i MyProduct.msi

it will be installed to C:\Program Files (x86)\MySoftware\

But when I call it via the command
msiexec TARGETDIR="C:\Temp" /i MyProduct.msi

it will not be installed to C:\Temp

What is the problem?

Thank you for helping me.
Marco