diff --git a/hal/audio_extn/soundtrigger.c b/hal/audio_extn/soundtrigger.c
index c6d7077..e148ead 100644
--- a/hal/audio_extn/soundtrigger.c
+++ b/hal/audio_extn/soundtrigger.c
@@ -252,7 +252,7 @@
 {
     audio_event_info_t event;
     char value[32];
-    int ret;
+    int ret, val;
 
     if(!st_dev || !params) {
         ALOGE("%s: str_params NULL", __func__);
@@ -287,6 +287,12 @@
         else
             ALOGE("%s: unknown CPE status", __func__);
     }
+
+    ret = str_parms_get_int(params, "SVA_NUM_SESSIONS", &val);
+    if (ret >= 0) {
+        event.u.value = val;
+        st_dev->st_callback(AUDIO_EVENT_NUM_ST_SESSIONS, &event);
+    }
 }
 
 int audio_extn_sound_trigger_init(struct audio_device *adev)