Custom ply:SetBodygroup IDs?

[tiertwelve]

I am adding the option to switch bodygroups/skins to my server's pointshop.
This is the code I am using: [url]http://facepunch.com/showthread.php?t=1370552&p=45503950&viewfull=1#post45503950[/url]

Within that code, there's the different body pieces such as head being 1, chest being 2, etc. I have some player models that for example have horns. Does this not count as a helmet? If not, then what ID would it be identified as? I've tried numbers 1 to 20 and still nothing. Skins seem to work fine, but I had another model with a bodygroup titled wings, and I still could not seem to get it to work with any number. I've tried skins and they function just fine. It just seems to be these unusual bodygroup pieces that I cannot find an ID for.

Any help is appreciated, it's not a huge issue, but I've searched and searched and found no answers.

Here's my code, just in case I messed something up.

[lua]
ITEM.Name = 'Demon Violinist [M]'
ITEM.Price = 9250
ITEM.Model = 'models/player/demon_violinist/demon_violinist.mdl'

function ITEM:OnEquip(ply, modifications)
if not ply._OldModel then
ply._OldModel = ply:GetModel()
end
timer.Simple(2, function() ply:SetupHands()
ply:SetModel(self.Model)
ply:SetBodygroup(1, modifications.group1 or 0)
end)
end

function Derma_Query_Dropdown( strText, strTitle, ... )

local Window = vgui.Create( "DFrame" )
Window:SetTitle( strTitle or "Message Title (First Parameter)" )
Window:SetDraggable( false )
Window:ShowCloseButton( false )
Window:SetBackgroundBlur( true )
Window:SetDrawOnTop( true )

local InnerPanel = vgui.Create( "DPanel", Window )
InnerPanel:SetDrawBackground( false )

local Text = vgui.Create( "DLabel", InnerPanel )
Text:SetText( strText or "Message Text (Second Parameter)" )
Text:SizeToContents()
Text:SetContentAlignment( 5 )
Text:SetTextColor( color_white )

local ButtonPanel = vgui.Create( "DPanel", Window )
ButtonPanel:SetTall( 50 )
ButtonPanel:SetDrawBackground( false )

local NumOptions = 0
local ListBox = vgui.Create( "DComboBox", ButtonPanel )

local k = 1
while true do

local Text = select( k, ... )
if Text == nil then break end

local Func = select( k+1, ... ) or function() end

ListBox:AddChoice(Text, Func, k == 1)

NumOptions = NumOptions + 1
k = k + 2

end

ListBox:SetPos(5,25)
ListBox:SetWide(100)
ListBox:SetTall(20)
ListBox.OnSelect = function(self, index, value, data)
data()
Window:Close();
end

local w, h = Text:GetSize()

w = math.max( w, ButtonPanel:GetWide() )

Window:SetSize( w + 50, h + 25 + 45 + 10 )
Window:Center()

InnerPanel:StretchToParent( 5, 25, 5, 45 )

Text:SetPos(0,5)
Text:CenterHorizontal()

ButtonPanel:StretchToParent( 5, 25, 5, 5 )

ListBox:SetWide(ButtonPanel:GetWide())
ListBox:CenterHorizontal()
ListBox:CenterVertical()

Window:MakePopup()

if ( NumOptions == 0 ) then

Window:Close()
Error( "Derma_Query: Created Query with no Options!?" )
return nil

end

return Window

end

function ITEM:OnHolster(ply)
if ply._OldModel then
ply:SetModel(ply._OldModel)
end
end

function ITEM:Modify(modifications)
Derma_Query_Dropdown("Do you want demon horns?", "Model Modifier",
"Yes", function()
modifications.group1 = 0 -- Horns
PS:SendModifications(self.ID, modifications) --Makes sure the pointshop knows to apply changes
end,
"No", function()
modifications.group1 = 1 -- No horns
PS:SendModifications(self.ID, modifications)
end)
print("modify")

end

function ITEM:OnModify(ply, modifications)
self:OnHolster(ply)
self:OnEquip(ply, modifications) -- adds the item back again, with new mods
end
[/lua]

In another thread I was told that each "ID" is unique for each model, and it can be retrieved via lua.
I wouldn't know how to do that exactly though, I'm fairly new to lua and gmod in general. Any assistance is greatly appreciated.

[Jeezy]

Find the icon for the model in the sandbox spawn menu, right click it and go to edit icon.
If I recall correctly, you can find all the bodygroups there.

[tiertwelve]

[QUOTE=Jeezy;46115017]Find the icon for the model in the sandbox spawn menu, right click it and go to edit icon.
If I recall correctly, you can find all the bodygroups there.[/QUOTE]

Won't that only give me the name, not the ID to identify that body piece?