Computercraft Geoscanner Turtle (Does not currently work)

local Scanner = peripheral.wrap("right")

print("What radius should this scan?")
local Radius = read()

print("what block should this scan for?")
local Block = read()

local ScanResults = Scanner.scan("block", 8)
for a,b in pairs(ScanResults) do
    if string.find(b.displayName, Block) then
        print(b.x, b.y, b.z)
    end
end