set macros via command line which i can use through c# application

I have c# application where i m able to start process via command line:-rapidminer com.rapidminer.RapidMinerCommandLine -f C:/omeshvari/test1.rmp
Now, process has model and some example set which I want to set there path through command line.
I have seen some post which are using command line :-
rapidminer "Mfile1= path for that file"
but it is giving me error that
WARNING: Cannot read process setup -Mfile1=C:\Users\test.xls
: No absolute path: -Mfile1=C:\Users\test.xls
com.rapidminer.repository.MalformedRepositoryLocationException: No absolute path
: -Mfile1=C:\Users\test.xls
how to solve this