diff --git a/transcription.go b/transcription.go
index b854e7d..1bcb045 100644
--- a/transcription.go
+++ b/transcription.go
@@ -9,13 +9,13 @@ type GetRecordingTranscriptionRequest struct {
 	TranscriptionType string `json:"type"`
 }
 
-type CallBackUrlStruct struct {
-	CallbackUrl string `json:"callback_url,omitempty" url:"callback_url,omitempty"`
+type TranscriptionCallbackUrlStruct struct {
+	TranscriptionCallbackUrl string `json:"transcription_callback_url,omitempty" url:"transcription_callback_url,omitempty"`
 }
 
 type RecordingTranscriptionRequest struct {
-	RecordingID string `json:"recording_id"`
-	CallbackUrl string `json:"callback_url,omitempty" url:"callback_url,omitempty"`
+	RecordingID              string `json:"recording_id"`
+	TranscriptionCallbackUrl string `json:"transcription_callback_url,omitempty" url:"transcription_callback_url,omitempty"`
 }
 
 type DeleteRecordingTranscriptionRequest struct {
@@ -37,7 +37,7 @@ type GetRecordingTranscriptionResponse struct {
 }
 
 func (service *TranscriptionService) CreateRecordingTranscription(request RecordingTranscriptionRequest) (response map[string]interface{}, err error) {
-	param := CallBackUrlStruct{CallbackUrl: request.CallbackUrl}
+	param := TranscriptionCallbackUrlStruct{TranscriptionCallbackUrl: request.TranscriptionCallbackUrl}
 	req, err := service.client.NewRequest("POST", param, "Transcription/%s", request.RecordingID)
 	if err != nil {
 		return
diff --git a/xml/plivoxml.go b/xml/plivoxml.go
index 0c68697..cd9448d 100644
--- a/xml/plivoxml.go
+++ b/xml/plivoxml.go
@@ -1197,6 +1197,12 @@ type MultiPartyCallElement struct {
 	StartRecordingAudioMethod *string       `xml:"StartRecordingAudioMethod,attr"`
 	StopRecordingAudio        *string       `xml:"StopRecordingAudio,attr"`
 	StopRecordingAudioMethod  *string       `xml:"StopRecordingAudioMethod,attr"`
+	RecordParticipantTrack    *bool         `xml:"recordParticipantTrack,attr"`
+}
+
+func (e MultiPartyCallElement) SetRecordParticipantTrack(value bool) MultiPartyCallElement {
+	e.RecordParticipantTrack = &value
+	return e
 }
 
 func (e MultiPartyCallElement) SetRole(value string) MultiPartyCallElement {