Set variables element export flag has no effect

[Ken Rowland]

The set_variables element data object is:

"data": {
  "custom_application_vars": {
    "var_name": "var value"
  },
  "export" : true
}

The documentation for the export flag states "When true the provided custom_application_vars are set on the channel and any channel bridged to it later" However, when placing this element prior to a ring_group, inspection of the outbound CDR legs to the members of the group show no difference whether export is set to true or false. 

I expected the variable to be present in the output legs. Is this broken?

[mc_]

I would guess the "bridged" part is necessary for the export to happen, but I'm hazy on the details at the moment.