Session data handling

[eluser]medvind[/eluser]
Hello!
I'm trying to understand the session class.

I have multiple controllers that will write to and read from the session cookie. Let's say we've got Controller A and Controller B.

Now, when Controller A does this:

Code:

$userdata['test'] = "hello";
$this->session->set_userdata($userdata);

And Controller B does this:

Code:

echo $this->session->userdata('test');

I expect to get a "hello". Instead there is nothing. The user data is gone. I must have misunderstood something here, but what?