AddTaskPreInit does not affect optionaltasks, intended?

I'm using now:

local tasksfile = require("map/tasks")
AddLevelPreInitAny(function(tasksetdata)
    thetasks = _G.ArrayUnion(tasksetdata.tasks,tasksetdata.optionaltasks)
    for i,name in ipairs(thetasks) do
        task = tasksfile.GetTaskByName(name)
        if task~=nil then
            -- mod the task ...
        end
    end
end) 

is that okay ?
hm, no that is no solution if we need to know the actual chosen_tasks...

The level.lua also has "GetTasksForLevel", but where can we call this before the world is generated?
Or I could "hack" into the ChooseTasks function...

Edited September 17, 2020 by Serpens