'FamilyInstance' object has no attribute 'Symbol'

I have just encountered this issue, which is pretty weird:

image

Here’s the code, I have the API loaded:

import sys
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *

clr.AddReference("RevitAPI")
clr.AddReference("RevitAPIUI")

import Autodesk 
from Autodesk.Revit.DB import *
from Autodesk.Revit.UI import *


x, y, i = 0, 0, 0
xList, yList = [], []
types, ids = [], []


detItemTypes = IN[1]

def getDetItemType(elemName, itemsList):
	if "FHF" in elemName:
		return(itemsList[0])
#	elif ""		


for entrance in IN[0]:

	x += 50000
	y = 0
	i = x
	
	for level in entrance:
	
		x = i	
		y += 1500
		
		for apartment in level[0]:
			x -= 1500
			for elem in apartment:
				xList.append(x)
				yList.append(y)
				x -= 500
				types.append(elem.Symbol)
				ids.append(elem.Id)
				
		x = i
		
		for apartment in level[1]:
			x += 1500
			for elem in apartment:
				xList.append(x)
				yList.append(y)
				x += 500
				types.append(elem.Name)
				ids.append(elem.Id)


OUT = xList, yList, types, ids

This is the line, that throws the exception:

types.append(elem.Symbol)

What could be wrong? This is the standard way of getting the FamilySymbol from a FamilyInstance… Those family instances are all Mechanical Equipment in this case, not that it should matter…

Looks like you’re not unwrapping your elements. Are you feeding Revit objects or Dynamo objects?

oh, shit… I guess it’s late and I should call it a day… Thank you!