NSIS Installation - Install specific TCL by ActiveState to Program directory

I have an NSIS Installation Script and need to install ActiveState DLL in an appropriate installation directory. I am not sure how to write the NSIS script so that the --directory DIR gets to Program files\TCL I am definining two directories, one for 32 and one for 64: !define TCL_INSTALLDIR32 "$PROGRAMFILES32\TCL" !define TCL_INSTALLDIR64 "$PROGRAMFILES64\TCL" Then I am trying to install like this ${If} ${RunningX64} nsExec::ExecToLog /OEM '"${TCL64}\[login to view URL]" --directory ${TCL_INSTALLDIR64}' ;add password ' IfFileExists "$INSTDIR\[login to view URL]" Is64txtExists is64txtDoesNotExist Is64txtDoesNotExist: StrCpy $Password "1234567890123456" StrLen $0 $Password ${If} $0 != '0' ClearErrors FileOpen $0 $INSTDIR\[login to view URL] w IfErrors errors FileWrite $0 "$Password" FileClose $0 goto endIs64 errors: MessageBox MB_OK|MB_ICONINFORMATION '$(TEXT_IO_CEASPWD)' endIs64: ${EndIf} Is64txtExists: ${Else} nsExec::ExecToLog /OEM '"${TCL32}\[login to view URL]" --directory ${TCL_INSTALLDIR32}' ${EndIf}