[IsJustaGhost]

There is a SetMapToMapId. However, unless the user changes the map manually first, the map will reset to the on map open default after SetMapToMapId is used. Making it almost useless.

I've proposed this.

function ZO_WorldMap_SetMapById(mapId)
    if WORLD_MAP_MANAGER:IsMapChangingAllowed() then
        if SetMapToMapId(mapId) == SET_MAP_RESULT_MAP_CHANGED then
            g_playerChoseCurrentMap = true
            CALLBACK_MANAGER:FireCallbacks("OnWorldMapChanged")
        end
    end
end

You see, the g_playerChoseCurrentMap must be true in order for the map to not be reset.

function Update(map, currentTimeS)
        -- ... in short
 
            -- If the player is just wandering around the world, with their map open, then refresh it every so often so that
            -- it's showing the appropriate location for where they are.  If they actually picked a loction, then avoid this update.
            if not g_playerChoseCurrentMap then
                if SetMapToPlayerLocation() == SET_MAP_RESULT_MAP_CHANGED then

The alternative is to:

local original_CALLBACK_MANAGER = CALLBACK_MANAGER
local function setMapById(mapId)
    -- lets prevent the callback from firing when we only want to set g_playerChoseCurrentMap to true
    CALLBACK_MANAGER = {FireCallbacks = function() end}
 
    -- Lets fire this so it will set g_playerChoseCurrentMap to true
    ZO_WorldMap_SetMapByIndex(1)
    
    -- Now reset the callback manager
    CALLBACK_MANAGER = original_CALLBACK_MANAGER
    
    -- Set map by mapId and fire callback
    if SetMapToMapId(mapId) == SET_MAP_RESULT_MAP_CHANGED then
        CALLBACK_MANAGER:FireCallbacks("OnWorldMapChanged")
    end
end