I have used an address from a data block which is currently declared as "spare". The code change has been downloaded, is working and everything is fine. I now would like to change the name of the address to something relevant for future fault finding. I have got into trouble previously for doing this within an instance data block. My question is, once I edit the name do I need to download the datablock, the datablock and all associated functions or just save the datablock and download the functions where the address is used? Thanks