[Freeswitch-users] Problem Verifying an existing file with lua

[Thomas Hoellriegel]

Hi all,
I like to export a vatiable to my dialplan.
  The variable file_name_ok should give back the value true if the file exists
My fialplan:
<action application="lua" data="file.lua ${call_screen_filename}"/>
  <action application="log" data="the value: ${file_name_ok}"/>

My problem: i can.t export the variable from the luascript

my scipt:
-- function used to check for the existence of a file
function file_exists(fname)
local f = io.open(fname, "r")
if (f and f:read()) then return true end
end
if ( session:ready() ) then
session:answer( );

datei = session:getVariable("file_name_ok");
if (file_exists(datei..extension..".wav")) then
session:setVariable("file_name_ok", "true");
else
session:setVariable("file_name_ok", "true");
end
end

can your help me please?



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