Wendy,

Are you sure that script does what you want it to do?  It sets both the configuration_item and u_security_role fields to the same value, the sys_id of the last (pretty sure last) record the query finds.

Not sure what that script is supposed to do but I think you want to do a record lookup then use data from that record for something?  No need to run a script for that you can use the Lookup Record or Lookup Records actions and access the record values from data pills.

@Uncle Rob aka The Duke has a series of YouTube videos on Flow Designer you should definitely check out.