Hi Kachy, thanks for your question. You didn't mention which LUA script, but I guess you mean SparkyAssignmentsToCara.lua
It is not for reading in peaklists, but for reading in sparky assignments generated with the 'rl' command.
Please see the top of the LUA script for information.
Once you read in the assignments, CARA should display expected peaks when you open the corresponding experiment using all scopes (except MonoScope which is for integrating peaklists).