Add HTML Frame in F4 menu (panel)

[Apolon Athena]

Hey, hello.

I have a F4 menu ([url]https://www.gmodstore.com/scripts/view/2728[/url]) and i want to add a html frame in the "rules" (panel). By default it's a .txt file and i need a html link.

------------------ Rules page
local PANEL = {}

function PANEL:Init()
	self.Type 		= 0
	self.Rules 		= ""
	self:Dock(FILL)
	self:DockPadding(5, 5, 5, 5)

	self.RichText = vgui.Create("RichText", self)
	self.RichText:Dock(FILL)
	self.RichText:InsertColorChange(210, 210, 210, 255)

	self:GetRules()
end

function PANEL:GetRules()
	if aMenu.UseLink then
		http.Fetch(aMenu.RulesLink,
			function(body, len, headers, code)
				if self.Rules then
					self.Rules = body
					self.RichText:AppendText(self.Rules)
					self:InvalidateLayout()				
				end
			end,
			function(error)
				MsgC(Color(240, 173, 78), "[aMenu] ", Color(210, 210, 210), "Failed to get online rules, reverting to config set.\n")
				self.Rules = aMenu.Rules
				self.RichText:AppendText(self.Rules)
				self:InvalidateLayout()
			end
		)
	else
		self.Rules = aMenu.Rules
		self.RichText:AppendText(self.Rules)
		self:InvalidateLayout()
	end
end

function PANEL:PerformLayout()
		self.RichText:SetFontInternal("aMenuregles")
		--self.RichText:SetFGColor(Color(255, 255, 255))
end

function PANEL:Paint(w, h)
	draw.RoundedBox(4, 0, 0, w, h, Color(41, 41, 41, 255))
end

vgui.Register("aMenuRules", PANEL, "DPanel")

--Link to a rules.txt file
aMenu.RulesLink = "https://raw.githubusercontent.com/Haruha/aMenu/master/rules.txt"

What i think i need:

local frame = vgui.Create( "DFrame" )
frame:SetSize( 300, 200 )
frame:SetTitle( "My new Derma frame" )
frame:SetVisible( true )
frame:SetDraggable( true )
frame:Center()
--Fill the form with a html page
local html = vgui.Create( "DHTML" , frame )
html:Dock( FILL )
html:SetHTML( [[
	<input type='submit' onclick='console.log( "RUNLUA:print( \"This is called in Lua context\" )" )' />
]] )

--Enable the webpage to call lua code
html:SetAllowLua( true )

frame:MakePopup()

But in my server, that show in the screen and not in the panel of the menu.
Can you help me ? Thank you.