Raven Backdrop Border

[Porsha]

I've tried pasting this in several different places within the LUA of Raven buff addon but have had no success.

local bg = CreateFrame("Frame", nil, bg.bars)
bg:SetBackdrop({
bgFile = 'Interface\\ChatFrame\\ChatFrameBackground',
edgeFile = 'Interface\\ChatFrame\\ChatFrameBackground',
edgeSize = 1,
})
bg:SetBackdropColor(0, 0, 0, .4)
bg:SetBackdropBorderColor(0, 0, 0)
bg:SetFrameLevel(0)
bg:SetPoint("TOPLEFT", bg.bars, -1, 1)
bg:SetPoint("BOTTOMRIGHT", bg.bars, 1, -1)


and changing some text from bg.bars to bars/bar doesnt seem to work either. Any help much appreciated!