You should not be calling SetStrandSelection directly on the guides, it won't do much since you're just calling the function on the resulting object of the evaluation pipeline. Instead you should do it through EditGuidesModifier. If you want to select some guides (excert from one of our unit tests):
local distributionObject = Plane lengthsegs:2 widthsegs:1 isSelected:on
max modify mode
modPanel.addModToSelection (Ox_Guides_from_Surface method:4 randomness:0 NumSegs:2)
local editGuidesInstance = Ox_Edit_Guides()
modPanel.addModToSelection editGuidesInstance
-- Move all 4 roots somewhere
subobjectLevel = 1
editGuidesInstance.SelectRoots #{1,2,3,4,5,6}
editGuidesInstance.MoveSelectedControlPoints [-5,-5,0]
-- Change guide count
distributionObject.lengthsegs = 1
-- Move control points somewhere
subobjectLevel = 2
editGuidesInstance.SelectRoots #{1,2,3,4}
editGuidesInstance.MoveSelectedControlPoints [1,1,0]
Marsel Khadiyev (Software Developer, EPHERE Inc.)
