Data read from Revit doesn't update

I’m trying to read out the names of different family types. But Dynamo doesn’t update, it sticks to the data it read the first time.
Here is what I’m currently using:
image

I’ve actually tried this on the basis of your idea in another thread. Slightly different, instead of a boolean I decided to give a random number as input to “automate” the trigger, well it would trigger it 999/1000 times…