Hi Shiwam,
there's an express function to apply names to signals: Set Dynamic Data Attributes
While this may help with your current problem I still advise to stay away from ExpressVIs, especially when they are build upon that evil DDT wires!
Do you really need to store GPS positions each millisecond? How fast is your vehicle moving?
Best regards,
GerdW
using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019