The embed-able codes work fine when you put them in the post response box, but upon actually previewing or posting the post, they do not work fine. I'm not ure if this is a limit set by the admins or a limit et by the forum software, but here is an example:
Spoiler

Thank you for reading, and I hope this can be implemented without much trouble. If it is difficult, don't bother, links are still fine but this is fancy~
~ Zalerinian