Problem with images displaying.

Hi. It’s been a while since I’m trying to include images in my inform project, but I don’t know what I’m doing wrong.
I included Location Image and Simple Graphical Window by Emily Short. And I’m trying to put the images in the “image window” that Simple Graphical Window gave me, and followed some guide in the Internet:


Section 1 - Extensions

Include Basic Screen Effects by Emily Short.
Include Basic Help Menu by Emily Short.
Include Simple Graphical Window by Emily Short.

Section 2 - Definición de gráficos y sonidos

The graphics background color is g-white.
The graphics window pixel count is 200.
The graphics window position is g-above.

Figure of World is the file “Image.jpg”.

Part 2 - Rooms

World is a room. The description is “A world.”.

When play begins:
change currently shown picture to the Figure of World;
follow the current graphics drawing rule.


THe problem is that Inform 7 tells me it doesn’t understand:
The graphics background color is g-white.
The graphics window pixel count is 200.
The graphics window position is g-above.

and after that:
change currently shown picture to the Figure of World.

saying “You wrote ‘change currently shown picture to the Figure of World’ : but this is a phrase which I don’t recognise.”

I don’t know what to do. If someone can help me, I really appreciate it. A good and simple example would help me a lot.