[Name] connectionid [Required] false [Type] ECMAScript Expression [Default Value] comes from the event being processed [Valid Values] Connection IDs [Description] An Optional ECMAScript expression which returns the identifier of a connection. The specified connection will be associated with the dialog being prepared. If both the connectionid and the conferenceid are omitted and the dialog was previously prepared using a dialogprepare element with a connectionid or conferenceid specified, the interpreter will use the id as specified on the dialogprepare element. If neither the connectionid or conferenceid is specified and the dialog had not previously been prepared, the interpreter will use the id indicated in the current event being processed. For more information about connections and bridges, refer to Section 10 . If both connectionid and conferenceid are specified, an error.fetch event will be thrown. If the attribute value is invalid or there is no valid default value, an error.semantic event will be thrown. [Attribute Constraints] 
Can not be used with conferenceid.