I used a Lua Script in my item,with while and saved more than 10000 variables, then all my character cards had gone.I have tried to restart the games,but it was totally useless.One of my guild friend once received my item and used it ,and it also killed all her character cards.So it should be very easy to kill all character cards when I debugging my items with lua scripts.May you have a way to resolve like to make a warn when it's too many variables or limit the max num of variables,or isolate the campaign and objects variables from player's own data,to not make it so easy to kill all character cards.It also could be a harmful way to kill someone else's category!

There also a way that I can make a very harmless look campaign , hiding a secret workflow when I send a signal to other users,and suddenly their character cards will be ruined.