Hi Pharpoom, welcome 
I’m not sure what you are trying to achieve - are you trying to add room name and number data to a floor element?
Floors elements generally are not related to a room as structural floors and even finishes may be across multiple rooms (such as carpet through an office). Typically the floor finish is stored in the Room instance ‘Floor Finish’ parameter.
So are you looking to automatically find the floor finish associated with a room and update that parameter? This can then be displayed in the Room Tag
If you haven’t done so, please review the following post → How to get help on the Dynamo forums
You could collect all the rooms and see if they intersect/touch with a floor, extract the floor type data and update the Floor Finish parameter. Search the forum for examples and give it a try