Help with capture buffers

[proCoder]

I'm trying to capture the level background for use in my lives screen,
But it just says "Invalid type for capture buffer."

When I looked into the code, I discovered my capture buffer... isn't a capture buffer??
This is my code:

Code: Select all

local buffer = Graphics.CaptureBuffer(cam.width, cam.height)
buffer.captureAt(-100)

Graphics.drawBox{
    x = 0,
    y = 0,
    priority = priority - 2,
    w = cam.width,
    h = cam.height,
    texture = buffer
}