Time cron rule does not react

after multipe test, I have to ask here. Is there something I did wrong? The rule does nothing with the item. I do not see the mistake

rule “Jalousien-abwesend-an”
when
Time cron “0 19 08 ? * MON-SUN”
then
{
alle_Jalousien_dunkel.sendCommand(OFF)
}
end

Solved: All working, was editing the Backup files and not the running system