Revolution slider

Hi, can someone help me with this revolution slider.
no matter what i do, i cant get the height of the image to adjust.

I simply want to know how to adjust the width and height of the slider so I can create an image of the right size. right now i am working on trial and error but getting nowhere, it keeps cutting off the height to about 400

Ive adjusted the slider settings to 'auto responsive’
Unlimited height - on
force full width - off
min height 600
Grid width 1920
grid height 600

Wait, I messed up, this is a post for Perth Pro, not sydney.
sorry guys, I’m stressed out!