Insert Slide Or Photo Gallery Into Post Blog

Hello everyone. I need help.

This is my situation:

-I make blog

-I use extension editMe, and everything is going well with text and picture

-This is my blog look’s like:

-This is when we create new post using editMe:

Now, my question is, how to insert a gallery photo like nivoslider into that post??

I mean how to insert a script code like

<?php include 'slideIndex.php'; ?>

into text area editMe??

Nevermind i found the solution. :D