ATTRIB Run program step not working

[tgriggs603]

Hi
I'm calling a "Run Program" step in my build %ATTRIB(C:\Build\project\bin\Release\project.exe, -r )%

It keeps failing and I can't figure out why!

Failed to create process: The system cannot find the file specified.
Step 'Set target exe non-read only' failed
Build ended.

When I type the same instructions on the command-line attrib -r "c:\build\project\bin\release\project.exe" it works fine...Any ideas?

-Tom