[Freeswitch-users] mod_curl data answer

[freeswitchtest]

Hi,

I am new in freeswitch but have used asterisk for more than 4 years.

So I have scripts in php which connect to our internal mysql database an 
for example show who is calling.

I trie in freeswitch with curl:

<action application="curl" 
data="http://www.mywebseite.de/freeswitch/call_in.php/?id=1234356788 json"/>

If I make it at the CLI I can see the correcct answer - the number of 
our customer

But how can I read the correct answer in the freeswitch dialplan. I 
thought of something like:

<action application="set" data="hurra=${curl_response_data}"/>

I tried in different ways but never got the number.

Where I am wrong ?

Thanks for your help