Timer

[human]

I am trying to make a timer for 7 days like a hologram for 7 days, and resets automatically.

I tried doing this with Command Blocks and redstone but all ideas failed horribly so if someone could help me i love u

 

[Marsbar]

options:
    perm: Holo.Reset #The permission to reset the command
    permmessage: &cYou do not have the right permission! #Permission message
    holoname: Reset #Name of the hologram
    line: 1 #The line that should be reset

variables:
    {hologram.message} = Default message #The message that it should be changed to after reset

command /resethologram:
    permission: {@perm}
    permission message: {@permmessage}
    trigger:
        set {hologram.start} to now
        execute console command "/hd setline {@holoname} {@line} %{hologram.message}%"
        send "Did reset hologram {@holoname}" to console
        send "Did reset hologram {@holoname}" to player

every second:
    if {hologram.start} isn't set:
        stop
    set {_dif} to difference between {hologram.start} and now
    if {_dif} is greater or equal to 7 days:
        execute console command "/resethologram"

I think it work.. You can try it and report errors back
[doublepost=1564593395,1564593274][/doublepost]Btw, timers can be like this:

set {timestart} to now #the beginning of the timer
set {_dif} to difference between {timestart} and now #Calculate the time
#{_Dif} is now the final result