--- ./src/libs/zbxserver/expression.c	2011-10-13 11:38:42.000000000 -0400
+++ ./src/libs/zbxserver/expression.c	2011-10-13 12:01:08.000000000 -0400
@@ -1476,6 +1476,7 @@
 #define MVAR_EVENT_AGE			"{EVENT.AGE}"
 #define MVAR_EVENT_ACK_STATUS		"{EVENT.ACK.STATUS}"
 #define MVAR_EVENT_ACK_HISTORY		"{EVENT.ACK.HISTORY}"
+#define MVAR_ESC_ORIGIN_EVENT_ID	"{ESC.ORIGIN.EVENT.ID}"
 #define MVAR_ESC_HISTORY		"{ESC.HISTORY}"
 #define MVAR_HOSTNAME			"{HOSTNAME}"
 #define MVAR_PROXY_NAME			"{PROXY.NAME}"
@@ -1835,6 +1836,8 @@
 					replace_to = zbx_strdup(replace_to, event->acknowledged ? "Yes" : "No");
 				else if (0 == strcmp(m, MVAR_EVENT_ACK_HISTORY))
 					ret = get_event_ack_history(event, &replace_to);
+				else if (0 == strcmp(m, MVAR_ESC_ORIGIN_EVENT_ID))
+					replace_to = zbx_dsprintf(replace_to, "%d", (int)(escalation != NULL ? escalation->eventid : event->eventid));
 				else if (0 == strcmp(m, MVAR_ESC_HISTORY))
 					ret = get_escalation_history(event, escalation, &replace_to);
 				else if (0 == strcmp(m, MVAR_TRIGGER_SEVERITY))