So the problem is the Scroller class right ?

There ARE 7 fields in the Scroller class and you show you have them in an earlier code posting. Inspect the world; then, in that, find and select 'Scroller scroller' and click the 'Inspect' button.

I did it again and it gave me the same for the Wide=1200 ,High=540 and Cells= 1 nothing more. Maybe i am doing something wrong...

You took a detour. Do not go to Static fields and find Scroller scroller.

Wait, I think I know what you did wrong. Right-click on the world background and select 'Inspect'.

Yes i actually did this and it gave me the wide high and cells.

What else did it give you? If "nothing else", what exactly are you looking at -- like, what is the title line of the Inspect window and what exactly are the captions of the fields you do get? If you did what I said properly, the title should read: sky : Sky not Class Sky

Yes You are indeed right the nam of the window is Class Sky. When i right click on sky and click on inspect. How and what do i need to inspect to have the sky : Sky .

(the scenario window)

Okay i found it so i proceeded as u did and 7 things appeared :for scroller : Scroller : Private World world / Private Greenfoot image Scrollimage/ private boolean limited/ private int scrolledX/private int scrolledY/pricate int Wide / private int high

And what are the values for wide and high?

They aren't in the Scroller scroller but if u're talking about the sky it's wide=900 and high = 540

You said there were 7 things for scroller (correct) and you named all correctly, including wide and high. As int fields, they must have values showing in the Inspect window. What are those values?

That's probably the problem both the private int High / private int Wide have no fields

They ARE fields -- and they have values.