How to add qto

Hi I'm new to all this IfcOpenShell python.

I would like to add the GrossFloorArea to all the IfcSpaces that do not have this property. This property needs to be inside Qto_SpaceBaseQuentities.

If the IfcSpace does not have Qto_SpaceBaseQuentities then I would like to add Qto_SpaceBaseQuentities and GrossFloorArea to that IfcSpace.

My final problem is to save these pset/qto(?) into a new IfcFile. Hope some of you can help me, thank you.

My current script looks like this

import ifcopenshell

import ifcopenshell.api

model = ifcopenshell.open(r"C:\ifcopenshell-python-311-v0.7.0-dadcbe6-win64 (1)\model\model.ifc")

import ifcopenshell.util.element

spaces = model.by_type("IfcSpace")

samlet_gross_floor_area = 0.0

for space in spaces:

try:

    pset = ifcopenshell.util.element.get_pset(space,"Qto_SpaceBaseQuantities",should_inherit=False,prop="GrossFloorArea")

    qto = ifcopenshell.util.element.get_pset(space,"Qto_SpaceBaseQuantities",should_inherit=False)

except TypeError as e:

    print("Space does not contain Qto_SpaceBaseQuantities")

    continue

try:

    print(pset)

    samlet_gross_floor_area += pset

except Exception as e:

    ifcopenshell.api.run("pset.edit_pset", model,

                        pset=model.by_id(qto["id"]), properties={"GrossFloorArea": 120})

    print("Added grossfloorarea")

model.write(r"output.ifc")