How to use the etk.wikidata.value.QuantityValue function in etk

try:
                property_type = property_type_map[i["statement"]["property"]]
            except KeyError:
                property_type = get_property_type(i["statement"]["property"], sparql_endpoint)
                if property_type != "Property Not Found" and i["statement"]["property"] not in property_type_map:
                    property_type_map[i["statement"]["property"]] = property_type
            if property_type == "WikibaseItem":
                value = Item(str(i["statement"]["value"]))
            elif property_type == "WikibaseProperty":
                value = Property(i["statement"]["value"])
            elif property_type == "String":
                value = StringValue(i["statement"]["value"])
            elif property_type == "Quantity":
                _value = i["statement"]["value"]
                _value = str(_value).replace(',', '')
                value = QuantityValue(_value)
            elif property_type == "Time":
                value = TimeValue(str(i["statement"]["value"]), Item(i["statement"]["calendar"]),
                                  translate_precision_to_integer(i["statement"]["precision"]),
                                  i["statement"]["time_zone"])
            elif property_type == "Url":
                value = URLValue(i["statement"]["value"])
            elif property_type == "Monolingualtext":
                value = MonolingualText(i["statement"]["value"], i["statement"]["lang"])
            elif property_type == "ExternalId":
                value = ExternalIdentifier(i["statement"]["value"])
            elif property_type == "GlobeCoordinate":
                value = GlobeCoordinate(i["statement"]["latitude"], i["statement"]["longitude"],
                                        i["statement"]["precision"])
            elif property_type == "Property Not Found":
                is_error = True
                break

for j in i["statement"]["qualifier"]:
                    try:
                        property_type = property_type_map[j["property"]]

                    except KeyError:
                        property_type = get_property_type(j["property"], sparql_endpoint)
                        if property_type != "Property Not Found" and i["statement"]["property"] not in property_type_map:
                            property_type_map[i["statement"]["property"]] = property_type
                    if property_type == "WikibaseItem":
                        value = Item(str(j["value"]))
                    elif property_type == "WikibaseProperty":
                        value = Property(j["value"])
                    elif property_type == "String":
                        value = StringValue(j["value"])
                    elif property_type == "Quantity":
                        value = QuantityValue(j["value"])
                    elif property_type == "Time":
                        value = TimeValue(str(j["value"]), Item(j["calendar"]), j["precision"], j["time_zone"])
                    elif property_type == "Url":
                        value = URLValue(j["value"])
                    elif property_type == "Monolingualtext":
                        value = MonolingualText(j["value"], j["lang"])
                    elif property_type == "ExternalId":
                        value = ExternalIdentifier(j["value"])
                    elif property_type == "GlobeCoordinate":
                        value = GlobeCoordinate(j["latitude"], j["longitude"], j["precision"])
                    elif property_type == "Property Not Found":
                        is_error = True
                    if value is None:
                        continue
                    else:
                        s.add_qualifier(j["property"], value)

if "qualifier" in i["statement"]:
			for j in i["statement"]["qualifier"]:
				try:
					property_type = property_type_cache[j["property"]]
				except KeyError:
					property_type = get_property_type(j["property"], sparql_endpoint)
					property_type_cache[j["property"]] = property_type
				if property_type == "WikibaseItem":
					value = Item(str(j["value"]))
				elif property_type == "WikibaseProperty":
					value = Property(j["value"])
				elif property_type == "String":
					value = StringValue(j["value"])
				elif property_type == "Quantity":
					value = QuantityValue(j["value"])
				elif property_type == "Time":
					value = TimeValue(str(j["value"]), Item(j["calendar"]), translate_precision_to_integer(j["precision"]), j["time_zone"])
				elif property_type == "Url":
					value = URLValue(j["value"])
				elif property_type == "Monolingualtext":
					value = MonolingualText(j["value"], j["lang"])
				elif property_type == "ExternalId":
					value = ExternalIdentifier(j["value"])
				elif property_type == "GlobeCoordinate":
					value = GlobeCoordinate(j["latitude"], j["longitude"], j["precision"])


				s.add_qualifier(j["property"], value)
		doc.kg.add_subject(s)
	data = doc.kg.serialize(filetype)
	# os.makedirs(Path.cwd() / "new_properties", exist_ok=True)

property_type_cache[pnode] = property_type

                if property_type == "WikibaseItem":
                    values = item['value']
                    if not isinstance(values, list):
                        values = [values]
                    value = [Item(v) for v in values if v is not None]
                elif property_type == "WikibaseProperty":
                    value = Property(item['value'])
                elif property_type == "String":
                    value = StringValue(item['value'])
                elif property_type == "Quantity":
                    values = item['value']
                    if not isinstance(values, list):
                        values = [values]
                    value = [QuantityValue(v) for v in values]
                elif property_type == "Time":
                    value = TimeValue(str(item['value']), Item(item["calendar"]),
                                      translate_precision_to_integer(item["precision"]), item["time_zone"])
                elif property_type == "Url":
                    value = URLValue(item['value'])
                elif property_type == "Monolingualtext":
                    value = MonolingualText(item['value'], item["lang"])
                elif property_type == "ExternalId":
                    value = ExternalIdentifier(item['value'])
                elif property_type == "GlobeCoordinate":
                    value = GlobeCoordinate(item["latitude"], item["longitude"], item["precision"])

                for val in value:
                    p.add_statement(pnode, val)

        doc.kg.add_subject(p)

doc.kg.bind('prv', 'http://www.wikidata.org/prop/reference/value/')
	doc.kg.bind('prn', 'http://www.wikidata.org/prop/reference/value-normalized/')
	doc.kg.bind('ps', 'http://www.wikidata.org/prop/statement/')
	doc.kg.bind('psv', 'http://www.wikidata.org/prop/statement/value/')
	doc.kg.bind('psn', 'http://www.wikidata.org/prop/statement/value-normalized/')
	doc.kg.bind('pq', 'http://www.wikidata.org/prop/qualifier/')
	doc.kg.bind('pqv', 'http://www.wikidata.org/prop/qualifier/value/')
	doc.kg.bind('pqn', 'http://www.wikidata.org/prop/qualifier/value-normalized/')
	doc.kg.bind('skos', 'http://www.w3.org/2004/02/skos/core#')
	doc.kg.bind('prov', 'http://www.w3.org/ns/prov#')
	doc.kg.bind('schema', 'http://schema.org/')

	property_type_cache = {}
	for i in resolved_excel:
		item = WDItem(i["statement"]["item"],  creator='http://www.isi.edu/t2wml')
		s = item.add_statement(i["statement"]["property"], QuantityValue(i["statement"]["value"]))
		doc.kg.add_subject(item)


		if "qualifier" in i["statement"]:
			for j in i["statement"]["qualifier"]:
				try:
					property_type = property_type_cache[j["property"]]
				except KeyError:
					property_type = get_property_type(j["property"], sparql_endpoint)
					property_type_cache[j["property"]] = property_type
				if property_type == "WikibaseItem":
					value = Item(str(j["value"]))
				elif property_type == "WikibaseProperty":
					value = Property(j["value"])
				elif property_type == "String":
					value = StringValue(j["value"])