i have created the file named "helloworld.lua" like this:

session:answer();

session:streamFile("blah.wav");

session:hangup();

and it working correctly,

**now i want to use lua command -not freeswitch command -in lua

for example run:

op='+'

if op == "+" then
      r = a + b
    elseif op == "-" then
      r = a - b
    elseif op == "*" then
      r = a*b
    elseif op == "/" then
      r = a/b
    else
      error("invalid operation")
    end

but how can do that?

thanks alot