[General] How to change the gold icon in tooltip?

[stan0033]

As you can see here I am trying to change the icon of the gold in the tooltip. Unfortunately it isn't changed. I tried to change it from gameplay interface, then tried imported image with changed path. Not working!
Are there any other fields I miss? I want to change that icon....

 

[jano1906]

If you use a normal game icon? Not an imported one, does it works ?

 

[stan0033]

No.

 

[Wietlol]

Image - Tooltip Gold Icon