How do I retrieve information from an iframe in an html form ?

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HTML5

I have two files :
1. syllabusContent.jsp
2. syllabusRichTextEditor.jsp

The syllabusContent.jsp contains an form and I have an

<iframe>

element in the form as shown in the code below:

<div>
Syllabus
    <iframe src="../syllabusRichTextEditor.jsp" width="1200" height="400"></iframe>
</div>

Now in my syllabusRichTextEditor.jsp I have the following piece of code:

<textarea id="tinyeditor" name="syllabus" style="width: 100%; height: 200px">
    ${sessionScope.coreCoursesBean.syllabus}
</textarea>

So When I am trying to display the contents of the form it is not displaying the string contained in

${sessionScope.coreCoursesBean.syllabus}

secondly,
when I click on submit, I want even the syllabus entered in the textarea to be submitted to my servlet, which is not hapenning.

So basically I want to know how to communicate between two jsp`s?