siggi , Thank you verry much!
This might be the solution for my Problem!
But how can i manually add the Version when its installed?
Is it possible for you to describe it a little more detailed?
Once you did hacked the code, then installed both fpm and cgi for the Php versions you want to use, that is, once you have installed the debian packages, you need to connect as administrator to the control panel, then on the setting side, you'll find a phpswitcher plugin section that make you able to register new PHP versions manually.