A question about giving mission orders

[Freetate]

Why do I use commands to add misson tasks to myself
!completemisson 6 1 gm
6=cop logID 1=copID

First line prompt: Completed Chains of Promathia Misson with ID 1 for GM
Tip: NOTE! this does NOT clear or update ANY misson variables

Does LSB have new logID and missonID? Why this command cannot be used?
The command cannot send the task to my task completion column
Misson > Promathia Can't view here

-- func: completemission
-- desc: Completes the given mission for the target player, if that mission is currently active.

require("scripts/globals/missions")

cmdprops =
{
permission = 1,
parameters = "sss"
}

function error(player, msg)
player:PrintToPlayer(msg)
player:PrintToPlayer("!completemission {player}")
end

function onTrigger(player, logId, missionId, target)

-- validate logId
local logName
local logInfo = GetMissionLogInfo(logId)
if (logInfo == nil) then
    error(player, "Invalid logID.")
    return
end
logName = logInfo.full_name
logId = logInfo.mission_log

-- validate missionId
local areaMissionIds = xi.mission.id[xi.mission.area[logId]]
if (missionId ~= nil) then
    missionId = tonumber(missionId) or areaMissionIds[string.upper(missionId)] or _G[string.upper(missionId)]
end
if (missionId == nil or missionId < 0) then
    error(player, "Invalid missionID.")
    return
end

-- validate target
local targ
if (target == nil) then
    targ = player
else
    targ = GetPlayerByName(target)
    if (targ == nil) then
        error(player, string.format("Player named '%s' not found!", target))
        return
    end
end

-- complete mission
targ:completeMission( logId, missionId )
player:PrintToPlayer( string.format( "Completed %s Mission with ID %u for %s", logName, missionId, targ:getName() ) )
player:PrintToPlayer("NOTE! This does NOT clear or update ANY mission variables! ")

end