Hi,
I want to change the Application Icon from this:

To this:

I have found documentation on this for a straightforward way linking to this video (Customizing Application Icons in Oracle APEX 22.1 - YouTube) However this is related to a version I am not on. My app version is V 20 of APEX,
I have tried this so far:

The icon is not showing, it is definitely the correct image name. Is there another way of doing this in APEX 20?
Gareth