Hello,
problem solved - everything works fine:-)
Karsten

Hi Karsten, sounds like you're all set up but just in case the inputs to the offset factory are like this:

0: FactoryInput_ObjectList, "Objects" // Objects to offset.
1: FactoryInput_Double, "Distance" // Offset distance.
2: FactoryInput_CoordinateFrame, "Offset pt" // Offset through point or which-side point for curve offset.
3: FactoryInput_String, "Corner type" // Corner type "sharp" or "round", for curve offset.
4: FactoryInput_Bool, "Trim" // True = trim curve results.
5: FactoryInput_Bool, "Flip" // True = flip solid offset side.
6: FactoryInput_Bool, "Both sides" // True = offset curves to both sides.
7: FactoryInput_Bool, "Cap ends" // True = add line segment between ends of open offset curves.

Hello Michael.

thanks for the reply!
Important for me was this:
var pln=ofFac.getCurvePlane();
ofFac.setInput(1, dist);
ofFac.setInput(2, pln);

I've displayed the pln frame in the nodeeditor and now I know what to do, to filp the side of the offset (I don't have a pointpicker here!).

Have a nice day
Karsten