I made a simple string to replace the symbol “-” in room number to “.” The nodes work in dynamo but didn’t change the symbol in Revit. Is there any node missing? 
Use then “SetParameter by Name and Value” connect final values to node.
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No luck for me. I tried to use the node on a Revit testing model that only has one room. It didn’t change room’s Name parameter.
Hi @Joe_Lee1 , the problem is that the string is being replaced but not being written to the parameter… after replacing the string, do as @Deniz_Maral said, use the SetParameter to assign those replaced strings and write the parameters
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