HI,
the XMMx name of the multimeter is the RefDes (unique SPICE identifier) of the instrument. It can also have a Label which you can chanege in the Spreadsheet VIEW under the component tab. You can hide the RefDes (go to options -> sheet properties) and select the label. Problem is now that the label of instruments isn't shown in you circuit now (only for components).
Best,
anna
Anna Vogl
Certified LabVIEW Developer