Please How to use code fences.
I strongly recommend using VSCode to edit .rules files. https://www.openhab.org/docs/configuration/editors.html#openhab-vs-code-extension
You have some very basic syntax errors and one logic problem.
- To access the state of an Item you must call .state, as in
Roxcore_Control.state
- To do a comparison you must use
==
. '=` is an assignment. - The logic error is described here