Problem with filling of objects
Hi,
I received a template to design a sport shirt but when I try to fill the parts with a color, nothing happens (see the first picture, where I try to make a red sleeve).
If I double click on a part of the shirt (like the sleeve), a square appears like in the second picture.
I'm a beginner with AI, so does anyone know why I can't color up the parts just like any other objects?
Thank you!
(I use the latest version of AI CC)

