How can I use an item's value in another item's HTTP request?

Setup, Configuration and Use Items & Sitemaps
1

Been struggling with this for some time now, any help would be appreciated.

I have an item called HomeSessionID. This contains a web session value and updates every hour.

I’m trying to bind several other HTTP items to a URL, but in those bindings, I want to use the value of HomeSessionID. Is this possible, and if not, how would you folks go about doing this?

Rather than hitting a URL of this sort:

http://blahblahblah?SessionID=C3EA713D-E91E-42D6-937E-942FA29D6CFB&blahblahblah

I want to hit it as such:

http://blahblahblah?SessionID={HomeSessionID}&blahblahblah

2

The bindings are fixed and you can’t use a variable in them.
You could use the http actions to achieve the same sort of result:

https://docs.openhab.org/addons/actions.html#http-actions