How to use schHiCreateWireStubs() in skill procedure?

I am trying to use  schHiCreateWireStubs() after instancing a symbol the schematic. 

procedure(CreateInstanceStubs(libName cellName viewName offset)

let( (cv ip instSymbol newInt)

;; Will create a schematic view

cv=dbOpenCellViewByType(libName cellName viewName "schematic" "a")

instSymbol=dbOpenCellViewByType("library" "cell" "symbol" nil)
newInt=dbCreateInst(cv dutSymbol "device_inst" list(0 0) "R0" 1)

schHiCreateWireStubs()

;..... more code after stubs are placed

))

I get error.

It seem schHiCreateWireStubs() only works if I have the schematic window open and works the same as Create > Wire Stubs and Names. I tried putting (dbReopen cv "r") but still get error. How can I "open" the schematic to place stubs. I will be adding more to the schematic in the code after.

Thanks for any help or insight