Installshield basic msi 64 bit setup access 32 bit registry, why?

Question

in the basic msi project of InstallShield2009Premier, I set the General Information->Summary Information Stream->Template Summary = x64;1033 to make the setup 64 bit.

Now I want to set a vale to registry(by importing a registry), but it goes to HKLM\SOFTWARE\WOW6432Node\Microsoft rather than HKLM\SOFTWARE\Microsoft.

How to access the 64 bit registry HKLM\SOFTWARE\Microsoft from install shield setup.