Please help me! NumberOCR and type

I want get number in region r and paste to Nhap_code, but error

My code:

setImagePath(scriptPath() .. "images")
dofile(scriptPath() .. "images.lua")
Settings:set("MinSimilarity", 0.8)
screen = getRealScreenSize()
X = screen:getX()
Y = screen:getY()

function orc()
if exists(A_code) then
CodeIP = exists(A_code)
r = Region(CodeIP:getX(), CodeIP:getY(), CodeIP:getW(), CodeIP:getW())
local p = numberOCR(r, "power")

wait(1)
if existsClick(Nhap_Code, 0.3) then
type(p)
existsClick(Done, 0.3)
end
end
end
orc()

error message:

Runtime error: Invalid method call. No such method.