How to access the image_size in class Instances?

[huztre]

The problem sounds trivial but I really have problems accessing the image size from the Instances class

When I try to access the data like this:

outputs["instances".image_size()

I get an error:

TypeError: 'tuple' object is not callable]

I've seen in the docs that image size (width, height) is returned as a tuple and I tried several ways to access the data in my program but without any success.

Can anyone pls help me here?