function isNumber(p)
local m = ""
for i = 1, string.len(p) do
m = string.sub(p, i, i)
if m == "0" or m == "1" or m == "2" or m == "3" or m == "4" or m == "5" or m == "6" or m == "7" or m == "8" or m == "9" then
-- continue
else
return FALSE
end
end
return TRUE
end