[Plugin: Sideblog WordPress Plugin] Sideblog & caption image

Hello first of all
I will like to know how to solve the following problem: when that I insert an image thanks to the manager of images, this one is posted correctly in on the editor of wordpress but in the sidebar, the mark out [caption] [/caption] is not taken into account. How to make?
Thank you in advance.

PS: Sorry for my bad english, i’m french ^^