Ok, we now have a working step system.
The unit slides out from under the body of the truck to reveal a platform 2.3mts long and 750mm wide, the steps then slide out from under this platform to the rear of the truck. So that when you exit the living accommodation there is a mini patio area before you go down the steps.
The platform in made from a fiberglass 12mm grid that has a non slip finish, The handrail on the steps pops up automatically as the steps are deployed.
I just need to add more handrail to the platform and a few finishing touches then the steps are sorted.
I will add a video of the steps being deployed in the next update