The locators I am using are older, customized .lot files that I would like to add the "additional field" option to. This is the user defined reference data variable that is usually either one field or in dual range locators a left and right side set of variables. Can this be done by modifying the .xat and encoding a .pat using Standardizer Editor? Any advice on this would be welcomed. I don't want to change anything except for adding the additional field(s).