Turtle test 2

x = 1
y = 1
z = 1
print("please enter area you would like to mine.")
print("x = ")
x = read()
print("y = ")
y = read()
print("z = ")
z = read()
tonumber(x)
tonumber(y)
tonumber(z)
MineArea = x * y * z




function MineRow(x)
  while x > 0
    do
      turtle.dig()
      turtle.forward()
      turtle.digDown()
      turtle.digUp()
      x = x-1
    end
  end
MineRow(x)