Nostalrius Begins - Quality wow vanilla realm (1.12)

So i was creating my new unit frames and i scripted al nicely. when i log in to test the frames they wont load and game imme error message "string 219 attempted to lead a nil value"

now the string is this one i give in here

function GhurzukUnitFrames_StartUp(self)
self:SetScript('OnEvent', function(self, event) self[event](self) end); {THIS IS THE STRING VALUE ERROR adrressed form game}
self:RegisterEvent('VARIABLES_LOADED');
end
GhurzukUnitFrames_StartUp(GhurzukUnitFrames);


what did i write wrong?

"self" doesn't exist in WoW's Lua 5.0. Look at existing code.
That only thing tht does exist is this and it's a global variable. So remove self from your function's parameters and replace every occurence of that word with "this". event is also a global.

function GhurzukUnitFrames_StartUp(self)
this:SetScript('OnEvent', function(this, event) this[event](this) end);
this:RegisterEvent('VARIABLES_LOADED');
end
GhurzukUnitFrames_StartUp(GhurzukUnitFrames);




something liek this?

GhurzukUnitFrames = CreateFrame('Button', 'GhurzukUnitFrames');
GhurzukUnitFrames.version = 1095
GhurzukUnitFrames.frames = {}

local playername = UnitName("player")

local validUnits = {
["target"] = true,
["targettarget"] = true,
["targettargettarget"] = true
}

function GhurzukUnitFrames:VARIABLES_LOADED()
EnableGhurzukUnitFrames();
end

function EnableGhurzukUnitFrames()
hooksecurefunc("TargetFrame_CheckFaction", GhurzukUnitFrames_TargetFrame_CheckFaction);
hooksecurefunc("TargetFrame_CheckClassification", GhurzukUnitFrames_TargetFrame_CheckClassification);
hooksecurefunc("TextStatusBar_UpdateTextString", GhurzukUnitFrames_TextStatusBar_UpdateTextString);
hooksecurefunc("PlayerFrame_ToPlayerArt", PlayerFrameImpoved_PlayerFrame_ToPlayerArt);
hooksecurefunc("PlayerFrame_ToVehicleArt", GhurzukUnitFrames_PlayerFrame_ToVehicleArt);
hooksecurefunc("TargetFrame_Update", GhurzukUnitFrames_TargetFrame_Update);

PlayerFrameHealthBar.capNumericDisplay = true;

PlayerFrameHealthBar:SetWidth(120);
PlayerFrameHealthBar:SetHeight(60);
PlayerFrameHealthBar:SetPoint("TOPLEFT",106,-22);
PlayerFrameHealthBar.lockColor = true
PlayerFrameHealthBarText:SetPoint("CENTER",50,6);
PlayerFrameTexture:SetTexture("Interface\\Addons\\GhurzukUnitFrames\\GhurzukUnitFrames-TargetingFrame.blp");
PlayerStatusTexture:SetTexture("Interface\\Addons\\GhurzukUnitFrames\\GhurzukUnitFrames-Player-Status.blp");
PlayerFrameHealthBar:SetStatusBarColor(UnitColor("player"));
end

--function GhurzukUnitFramesPanel_OnLoad(self)
-- panel.name = "GhurzukUnitFrames "..GetAddOnMetadata("GhurzukUnitFrames", "Version");
-- panel.okay = function(self) GhurzukUnitFrames_Close(); end;
-- panel.cancel = function(self)GhurzukUnitFrames_CancelOrLoad(); end;
--
-- InterfaceOptions_AddCategory(panel);
--end

function GhurzukUnitFrames_TextStatusBar_UpdateTextString(textStatusBar)
local textString = textStatusBar.TextString;
if(textString) then
local value = textStatusBar:GetValue();
local valueMin, valueMax = textStatusBar:GetMinMaxValues();

if ( ( tonumber(valueMax) ~= valueMax or valueMax > 0 ) and not ( textStatusBar.pauseUpdates ) ) then
textStatusBar:Show();
if ( value and valueMax > 0 and ( GetCVarBool("statusTextPercentage") or textStatusBar.showPercentage ) and not textStatusBar.showNumeric) then
if ( value == 0 and textStatusBar.zeroText ) then
textString:SetText(textStatusBar.zeroText);
textStatusBar.isZero = 1;
textString:Show();
return;
end
value = tostring(math.ceil((value / valueMax) * 100)) .. "%";
if ( textStatusBar.prefix and (textStatusBar.alwaysPrefix or not (textStatusBar.cvar and GetCVar(textStatusBar.cvar) == "1" and textStatusBar.textLockable) ) ) then
textString:SetText(textStatusBar.prefix .. " " .. value);
else
textString:SetText(value);
end
elseif ( value == 0 and textStatusBar.zeroText ) then
textString:SetText(textStatusBar.zeroText);
textStatusBar.isZero = 1;
textString:Show();
return;
else
textStatusBar.isZero = nil;
if ( textStatusBar.capNumericDisplay ) then
value = UnitFramesImproved_CapDisplayOfNumericValue(value);
valueMax = UnitFramesImproved_CapDisplayOfNumericValue(valueMax);
end
if ( textStatusBar.prefix and (textStatusBar.alwaysPrefix or not (textStatusBar.cvar and GetCVar(textStatusBar.cvar) == "1" and textStatusBar.textLockable) ) ) then
textString:SetText(textStatusBar.prefix.." "..value.."/"..valueMax);
else
textString:SetText(value.."/"..valueMax);
end
end

if ( (textStatusBar.cvar and GetCVar(textStatusBar.cvar) == "1" and textStatusBar.textLockable) or textStatusBar.forceShow ) then
textString:Show();
elseif ( textStatusBar.lockShow > 0 and (not textStatusBar.forceHideText) ) then
textString:Show();
else
textString:Hide();
end
else
textString:Hide();
textString:SetText("");
if ( not textStatusBar.alwaysShow ) then
textStatusBar:Hide();
else
textStatusBar:SetValue(0);
end
end
end
end

function PlayerFrameImpoved_PlayerFrame_ToPlayerArt(self)
PlayerFrameHealthBar:SetWidth(120);
PlayerFrameHealthBar:SetHeight(60);
PlayerFrameHealthBar:SetPoint("TOPLEFT",106,-22);
PlayerFrameHealthBarText:SetPoint("CENTER",50,6);
PlayerFrameTexture:SetTexture("Interface\\Addons\\GhurzukUnitFrames\\GhurzukUnitFrames-TargetingFrame.tga");
PlayerStatusTexture:SetTexture("Interface\\Addons\\GhurzukUnitFrames\\GhurzukUnitFrames-Player-Status.blp");
PlayerFrameHealthBar:SetStatusBarColor(UnitColor("player"));
end

function GhurzukUnitFrames_PlayerFrame_ToVehicleArt(self)
PlayerFrameHealthBar:SetHeight(12);
PlayerFrameHealthBarText:SetPoint("CENTER",50,3);
end

function GhurzukUnitFrames_TargetFrame_Update(self)
local thisName = self:GetName();
self.healthbar.lockColor = true
self.healthbar:SetWidth(120);
self.healthbar:SetHeight(30);
self.healthbar:SetPoint("TOPLEFT",7,-22);
self.healthbar:SetStatusBarColor(UnitColor(self.healthbar.unit));
_G[thisName.."TextureFrameHealthBarText"]:SetPoint("CENTER",-50,6);
self.deadText:SetPoint("CENTER",-50,6);
self.nameBackground:Hide();
end

function GhurzukUnitFrames_CapDisplayOfNumericValue(value)
local strLen = strlen(value);
local retString = value;
if (true) then
if ( strLen >= 10 ) then
retString = string.sub(value, 1, -10).."."..string.sub(value, -9, -9).."G";
elseif ( strLen >= 7 ) then
retString = string.sub(value, 1, -7).."."..string.sub(value, -6, -6).."M";
elseif ( strLen >= 4 ) then
retString = string.sub(value, 1, -4).."."..string.sub(value, -3, -3).."k";
end
else
if ( strLen >= 10 ) then
retString = string.sub(value, 1, -10).."G";
elseif ( strLen >= 7 ) then
retString = string.sub(value, 1, -7).."M";
elseif ( strLen >= 4 ) then
retString = string.sub(value, 1, -4).."k";
end
end
return retString;
end

function GhurzukUnitFrames_TargetFrame_CheckClassification(self, forceNormalTexture)
local texture;
local classification = UnitClassification(self.unit);
if ( classification == "worldboss" or classification == "elite" ) then
texture = "Interface\\Addons\\GhurzukUnitFrames\\GhurzukUnitFrames-TargetingFrame-Elite.blp";
elseif ( classification == "rareelite" ) then
texture = "Interface\\Addons\\GhurzukUnitFrames\\ghurzukUnitFrames-TargetingFrame-Rare-Elite.blp";
elseif ( classification == "rare" ) then
texture = "Interface\\Addons\\GhurzukUnitFrames\\GhurzukUnitFrames-TargetingFrame-Rare.blp";
end
if ( texture and not forceNormalTexture) then
self.borderTexture:SetTexture(texture);
self.haveElite = true;
if ( self.threatIndicator ) then
self.threatIndicator:SetTexCoord(0, 0.9453125, 0.181640625, 0.400390625);
self.threatIndicator:SetWidth(242);
self.threatIndicator:SetHeight(112);
self.threatIndicator:SetPoint("TOPLEFT", self, "TOPLEFT", -22, 9);
end
else
self.borderTexture:SetTexture("Interface\\Addons\\GhurzukUnitFrames\\GhurzukUnitFrames-TargetingFrame.tga");
self.haveElite = nil;
if ( self.threatIndicator ) then
self.threatIndicator:SetTexCoord(0, 0.9453125, 0, 0.181640625);
self.threatIndicator:SetWidth(242);
self.threatIndicator:SetHeight(93);
self.threatIndicator:SetPoint("TOPLEFT", self, "TOPLEFT", -24, 0);
end
end
end

function GhurzukUnitFrames_TargetFrame_CheckFaction(self)
local factionGroup = UnitFactionGroup(self.unit);
if ( UnitIsPVPFreeForAll(self.unit) ) then
self.pvpIcon:SetTexture("Interface\\TargetingFrame\\UI-PVP-FFA");
self.pvpIcon:Show();
elseif ( factionGroup and UnitIsPVP(self.unit) and UnitIsEnemy("player", self.unit) ) then
self.pvpIcon:SetTexture("Interface\\TargetingFrame\\UI-PVP-FFA");
self.pvpIcon:Show();
elseif ( factionGroup ) then
self.pvpIcon:SetTexture("Interface\\TargetingFrame\\UI-PVP-"..factionGroup);
self.pvpIcon:Show();
else
self.pvpIcon:Hide();
end
end

function UnitColor(unit)
local r, g, b;
if ( ( not UnitIsConnected(unit) ) or ( UnitIsDeadOrGhost(unit) ) ) then
--Color it gray
r, g, b = 0.5, 0.5, 0.5;
elseif ( UnitIsPlayer(unit) ) then
--Try to color it by class.
local localizedClass, englishClass = UnitClass(unit);
local classColor = RAID_CLASS_COLORS[englishClass];
if ( classColor ) then
r, g, b = classColor.r, classColor.g, classColor.b;
else
if ( UnitIsFriend("player", unit) ) then
r, g, b = 0.0, 1.0, 0.0;
else
r, g, b = 1.0, 0.0, 0.0;
end
end
else
r, g, b = UnitSelectionColor(unit);
end

return r, g, b;
end

this is what i created yet frames dunno why not showing :/ what did i do wrong?