Hello Ex-jobb,
you have to differentiate between a "menu ring" and a "menu". Do you want to have a menu ring on the front panel or do you want to change the runtime-menu of the vi?
My last reply uses the runtime-menu, which you can change before you "compile" your vi (Edit->Run-Time Menu). But you can also change it in runtime via the functions in the menu palette (in Application control palette). So you can insert your options from the text file to the menu, check the user input and set checkmarks on those menu items.
When using the front panel there will be several options too. One I can think of consists of two arrays, one array indicator of strings with your options and one array control of boolean switches (perhaps Dialog checkbox from classic controls). You can read in your text file, display the strings in this array indicator and the user sets the appropriate checkboxes. With some property nodes you can adapt the shown number of elements (of both arrays) to the number of strings. But be aware: it's tricky to change the size of dialog checkboxes (there are threads on this in the forum).
Best regards,
GerdW
Best regards,
GerdW
using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019