I've managed to extract cata Troll and GNOME and tested them as Login screen and work perfect but i have a problem setting them up for the races

I've tried to use them for Worgen and goblin and they work but when i try to use them on Gnome and Troll it stil show the default ones

if (name == "Goblin" or name == "GOBLIN") then
name = "Goblin";
end

if (name == "FelOrc" or name == "FELORC") then
name = "Gnome"; <- Here it work
end

if (name == "Gnome" or name == "GNOME") then
name = "Gnome"; <- Here don't
end

if (name == "Troll" or name == "TROLL") then
name = "Troll"; <-Same for this one
end

Does anybody know what else i have to edit ?

EDIT: Nvm got it working using another extractor


I've just succesfully managed to export goblin models and now i'm stuck on worgen because when i open the game i see just a black page on login/char creation http://prntscr.com/9uoi8w

Here is the goblin http://prntscr.com/9uoil6
And here is Worgen http://prntscr.com/9uoivv

I used the same extraction method as for goblin
and here is the function that sets the background model , i use FelOrc as replacement since i don't thing that adding a new race id will work because of hardcodes
function SetBackgroundModel(model, name)
    local nameupper = strupper(name);

if (name == "Goblin" or name == "GOBLIN") then
name = "Goblin";
end

if (name == "FelOrc" or name == "FELORC") then
name = "Worgen";
end

    local path = "Interface\Glues\Models\UI_"..name.."\UI_"..name..".m2";
if ( model == CharacterCreate ) then
SetCharCustomizeBackground(path);
else
SetCharSelectBackground(path);
end
PlayGlueAmbience(GlueAmbienceTracks[nameupper], 4.0);
SetLighting(model, nameupper)
end

And here is the structure of the UI_Worgen.M2 file http://prntscr.com/9uok7v

I cand find what is wrong , and about worgen model it works just perfect when i Log in so there's no problem with creature model.

ok guys i did everything but this dbc for skills i cannot handle how to modify them there are scallars and idk how to get them working :|

The files i need to modify are

gtChanceToMeleeCrit.dbc.csv
gtChanceToMeleeCritBase.dbc.csv
gtChanceToSpellCrit.dbc.csv
gtChanceToSpellCritBase.dbc.csv
gtOCTClassCombatRatingScalar.csv
gtOCTRegenHP.dbc.csv
gtOCTRegenMP.dbc.csv
gtRegenHPPerSpt.dbc.csv
gtRegenMPPerSpt.dbc.csv
SkillLine.dbc
SkillLineAbility.dbc
SkillRaceClassInfo.csv
SkillTiers.csv

i've been searching on wowdevs for description about all collumns but i didn't found annything :| and folloved  
viewtopic.php?f=26&t=3838  this tutorial but i don't understand wht he changed