Variable for intermediate directory does not work in paths for moc, uic and rcc. $(IntDir) (VS 2010)

I'm using an external build directory to avoid conflicts with shared libraries and keep my source directory clean from temporary files. Therefore my definition of the intermediate directory looks like this:

$(EDUBUILD)\$(SolutionName)\$(ProjectName)\$(Configuration)_$(PlatformName)\

Where EDUBUILD is an environment variable which is pointing to the external build directory, this can be at a different location on various systems. Obviously I would like to create the temporary results of the UIC, RCC and MOC in the same intermediate directory.

$(IntDir)\uic
$(IntDir)\moc
$(intDir)\rcc

But this is not possible, for unknown reasons the user interface blocks adding this valiables - even the $(IntDir) is the best variable for creating intermediate files.

By the way, because the $(IntDir) usually contains variables for Debug/Release and x86/x64 - this would remove the need for this mess:

And reduce it to one simple moc_*step per header file.