Set a channel variable in callflow

[cecchisandrone]

Hello,

I'm trying to set a channel variable that I need for Homer in order to correlate legs as indicated here https://github.com/sipcapture/homer/wiki/Examples%3A-FreeSwitch#b2bua-correlation.

I tried the following callflow using Pivot:

{

    "data": {

        "channel": "both",

        "value": "${Call-ID}",

        "variable": "sip_h_X-cid"

    },

    "module": "set_variable",

    "children": {

        "_": {

            "data": {"to_did":"+xxxxxxxxxx"},

            "module": "resources"            

        }

    }

}

I noticed two problems:

1) Variable name is not set as I want and if check fs_cli I can see ecallmgr_undefined=staticvalue (using a static value instead a placeholder)

2) If I try ${Call-ID} I also receive this error in FS:

2017-06-16 08:30:17.742488 [CRIT] switch_channel.c:1407 Invalid data (${ecallmgr_undefined} contains a variable)

so it seems placeholder is incorrect and cannot be resolved in FS

Is there a special syntax that should I respect to set channels variables?

I was checking https://github.com/2600hz/kazoo/blob/96d240ef3821eb90371f8def77858576e3fe985c/applications/ecallmgr/src/ecallmgr.hrl but since I'm not an expert in Erlang I don't understand if I need to modify source code to do this.

Thanks for your suggestions.

[cecchisandrone]

Any hint on this guys?