Run program in VMWare Workstation

[avalon]

Hi,
I have problems running a program on a VM which has program arguments.
I use the VMWare Workstation step and the command "Run program".
Then in the "program" line I call the program itself: [PathTo]\msiexec.exe. Then one line underneath I specify the parameters like /a myProgram.msi /qn.

When I execute this step the msiexec.exe is called, but the paramters are not correct. When I execute the same commandline directly on the VM everything is correct, so the parameters are right, essentially.
Any idea what's the problem here?