Frame Transparent Like IceHud

[Silverstyle]

hey,

im a "beginner" in lua and i want to make a wow addon like IceHud,
but my problem is:
the vertical texture (my health) sizes down if i have no health is warped



here my code:

local Silverstyle     = CreateFrame("Frame", "SilverstyleBackground")
local SilverstyleBar  = Silverstyle:CreateTexture("SilverstyleStatusBar")
Silverstyle:SetWidth(128)
Silverstyle:SetHeight(256)
SilverstyleBar:SetWidth(128)
SilverstyleBar:SetHeight(256)
Silverstyle:SetPoint("CENTER", -100, 0)
SilverstyleBar:SetPoint("CENTER", Silverstyle)
Silverstyle:SetBackdrop({bgFile = "Interface\\AddOns\\Silverstyle\\BarBackground.tga"})
SilverstyleBar:SetTexture("Interface\\AddOns\\Silverstyle\\BarTexture.tga")
Silverstyle:SetScript("OnUpdate", function()
	SilverstyleBar:SetHeight(floor(UnitHealth("player") / UnitHealthMax("player") * 256))
end )

is it possible to cut the full texture from top to bottom without sizing?

sry for bad english, im german..
thanks 4 answers!