Create a legendary lord form building unlocking

[SimoGiova]

Hi everybody,
since it's my first post I'd like to thank all the people in this community since I learned a lot about warhammer modding from this forum.
I'm currently working on creating a legendary lord and I'd like him to be added to the character pool after unlocking a building, as you can do with a normal agent.
I tried to add him as a building effect like other agents but it doesn't work so I had to make a script, but since it doesn't work at all and I've no idea how to debug it I'd like to get some help from you.
Here is the script:

function norsca_dhampir_script()
    out("-------- SCRIPT DHAMPIR START ---------");
    NorVamp_Custom_Listeners();
end;

function NorVamp_Custom_Listeners()
    out("-------- LISTENER DHAMPIR START ---------");
    core:add_listener(
            "add_Lord_to_Character_Pool",
            "BuildingCompleted",
            function(context)
                    local faction = context:garrison_residence():faction();
                    out("local faction:"..tostring(faction)));
                    return faction:name() == "wh_main_vmp_vampire_counts";
            end,
            function(context)
                    local building_name = context:building():name();
                    local faction_name = context:garrison_residence():faction():name();
                    out("local building faction:"..tostring(building_name;
                    out("local faction:"..tostring(faction_name)));

                    if (building_name == "wh_main_vmp_forest_1") and not (cm:get_saved_value("lord_spawn_only_one")) then
                        cm:spawn_character_to_pool("wh_main_vmp_vampire_counts", "names_name_999888777", "", "", "", 18, true, "general", "wh_main_vmp_blood_ritual_great_sorcerer", true, "");
                        cm:set_saved_value("lord_spawn_only_one", true);
                    end;
            end,
            true
        );
end;

I put it in script->campaign->main_warhammer->mod->norsca_dhampir_script.lua
Cheers

[SimoGiova]

I'm trying to modify start_pos with DAVE to include my lord in character pool instead of scripting, but still no luck here. I modified start_pos_character and start_pos_starting_generals_options.

[SimoGiova]

MY Pack File Manager was corrupted. Now the script actually spawns the unit but i cannot see the general name.