how to integrate SSL cert with HTTPS post monitor

An HTTPS POST monitor is basically the same as an HTTP POST monitor with the addition of SSL-related functions. I would start out testing with cURL from the command line to make sure you have everything you need. Example:

curl -v http://10.10.10.10/my/uri -d "username=foo&password=bar"

This will produce something like the following:

POST /my/uri HTTP/1.1
User-Agent: curl/7.16.4 (i586-pc-mingw32msvc)...
Host: 10.10.10.10
Accept: */*
Content-Length: 25
Content-Type: application/x-www-form-urlencoded

Once you have a good working POST from the command line, convert that to a single line statement for the monitor this this:

POST /my/uri HTTP/1.1\r\nHost: 10.10.10.10\r\nAccept: */*\r\nContent-Length: 25\r\nContent-Type: application/x-www-form-urlencoded\r\n\r\nusername=foo&password=bar