If two cells have information, then : I want to check two cells and if both are filled in I would like to have the term 'Switch' in my third cell. 

I found some information about doing this with blank celss (e.g. **http://stackoverflow.com/questions/27439738/if-1-or-2-cells-are-blank-then#_=_**). However, I would like to do the same with filled cells. I tried several things, only it did not work so far...

Help is very appreciated.