CalendarLib Ec v1.1.5 has bug with macOS Tahoe 26.2

Hi,

Recently I upgraded to Tahoe 26.2, and got a bug to use the command

filter events by pattern event list theEvents event summary theTitle : missing value event description desc : missing value event location theLocation : missing value using regex regexFlag : true

it shows an error that “useRegex variable is not defined”

any idea to solve it? Thanks for your help.