Plesk 11.x / Windows :: Enable SSL With A Self-signed Certificate?

I want to enable SSL in one of my domains. I've checked old topics about how to do this, but I can't get it done.

I want to use a self-signed certificate. I'm gonna use the SSL to receive and send data from/to an Android device, not to access it using a web browser.

I created my own certificate in SSL certificates (I used the self-signed option instead of Request). I didn't add anything else after that, I didn't add Certificate or anything else.

Once it's been created, I enable SSL on the domain I want. I just enabled the checkbox, there's no combobox to select a certain certificate, but I changed the default certificate on SSL certificates. I thought that was enough, but it wasn't working so I went to IP Addresses, I clicked in my dedicated IP (shared) and selected my new certificate in there, but it's still not working.

EDIT:

I've just seen that Apache Tomcat might not be installed, I'm not sure if that has anything to do with it. If I go to Server->Service Management I can find Apache Tomcat 5.4.4 in the Java tab (it's the only Apache entrance), but it says it's not active since it hasn't been installed or it's not correctly configurated. If I go to Applications->Installed applications Apache Tomcat is not there.