Add a script LUA to Domino Bar Addon Hotkeys

[Noresa]

Hello Guys,

I've bought a SteelSeries Mice with 15 Buttons and to use all of them I had to put most of the Mousebuttons on Numpad Keys, it works well but the Hotkey Text is annoying and I am looking for a way to customize it in the Dominos Actionbar Addon.

I want the HM, UP, PU, En, PD changed to something like G1, G2, G3, G4.

I looked around in the Internet and found a script, this one:

local function updatehotkey(self, actionButtonType)
    local hotkey = _G[self:GetName() .. 'HotKey']
    local text = hotkey:GetText()

    text = string.gsub(text, '(s%-)', 'S')
    text = string.gsub(text, '(a%-)', 'A')
    text = string.gsub(text, '(c%-)', 'C')
    text = string.gsub(text, '(Mouse Button )', 'M')
    text = string.gsub(text, '(Middle Mouse)', 'M3')
    text = string.gsub(text, '(Num Pad )', 'G')
    text = string.gsub(text, '(Page Up)', 'G1')
    text = string.gsub(text, '(Page Down)', 'G2')
    text = string.gsub(text, '(Spacebar)', 'SpB')
    text = string.gsub(text, '(Insert)', 'G3')
    text = string.gsub(text, '(Home)', 'G4')
	text = string.gsub(text, '(F5)', 'MBD')
    text = string.gsub(text, '(F6)', 'MDB1')
    text = string.gsub(text, '(F7)', 'MDB2')

    hotkey:SetText(text)
end
hooksecurefunc("ActionButton_UpdateHotkeys", updatehotkey)

So I loaded the Script and it works like a Charm with the Blizzard Custom UI Bars, but sadly it is not working with Dominos. I guess Dominos overrides the Blizzard Bars and therefore the Custom Keybindings Texts are not working anymore.

My question to you is now, what can I do to combine these two Addons, the one created with the help of the Script and Dominos.
I started looking at the Dominos .lua file for the Action bar and put the code in, but that didn't work of course, because the file is filled with a lot of Code and I am not sure where to begin.

Can you give me some advice on how to do that or is that way over my head?
I am happy about any advice.

Regards.