Changing names and parts in pipe networks and pressure pipes

I am new to Dynamo, I have been able to export to excel but I am having trouble connecting back, I have been able to change names and part sizes but it has done it globally and I havnt found away of control other than doing it individually, which isnt the point of dynamo, I could do with some pointers on how to connect back to the drawing when it is connected to excel and how to get a pick list

It is better

support your question

An example of an CAD drawing