Truely thanx Pat, Iv already figured out, at least the vb componet is
no longer red...this is what Iv written
Dim obj As IRhinoBrepObject = doc.AddBrepObject(Geometry)
doc.Regen()
Dim filename As String = "D:\GH_Animation" & slider & ".jpg"
app.RunScript("-_Render")
app.RunScript("-_SaveRenderWindowAs " & filename)
app.RunScript("-_CloseRenderWindow")
doc.DeleteObject(New MRhinoObjRef(obj), True, True)
then I wrote a defination as the same as your picture, the F(x) is
orange, what did you put in the F input parameter?How to make the
defination work?