setting references in set data compound, python

[Sebastian Kowalski]

hey list,
i cant figure out how to set the references of set data nodes.
this wont work:
setter0 = Application.AddICECompoundNode('Set Data', oTree)
setter0.InputPorts(1).Value = 'this.tmp'
or
setter0.Value = 'this.tmp'
or
setter0.Parameters('reference').Value = 'this.tmp'

i refuse to use a command for that . . .