ToC, captions and styles

Hello,

I'm using pages 5.1. All the images in my document have a caption which are just a stylized text. I created a Table of Content dedicated to those captions. This is my Table of Figure. But i have some promblems :

1)

When the caption is put into a text box, it does not appear in the ToC :

I know it's normal. So, how could i have an image on the right or left part of my content, with a caption under the image, and have this caption in my ToC ?

2)

Is it possible to add a custom list number style "Fig. X" ? Pages only accept these ones :

3)

When I add a number on my list style, if my caption is centered, the number stays on the left :

How could i align the number ?

Thank you.