[Zax]

	CreateFrame("Frame", "OptionsPanel")
	OptionsPanel.name = "YourAddon"
	InterfaceOptions_AddCategory(OptionsPanel)
	SlashCmdList["ABCSlash"] = function()
		InterfaceOptionsFrame_OpenToCategory("YourAddon")
	end
	SLASH_ABCSlash1 = "/abc"

Thank you.
It doesn't work better than my original script but we'll see on next PTR versions.