diff --git a/service/alerting/elasticsearch/engine.go b/service/alerting/elasticsearch/engine.go
index 22301ac7..e514ab4f 100644
--- a/service/alerting/elasticsearch/engine.go
+++ b/service/alerting/elasticsearch/engine.go
@@ -633,7 +633,7 @@ func (engine *Engine) Do(rule *alerting.Rule) error {
 		period := time.Now().Sub(rule.LastNotificationTime.Local())
 
 		//log.Error(lastAlertItem.ID, period, periodDuration)
-		paramsCtx := newParameterCtx(rule, checkResults,alertItem.ID, alertItem.Created.Format(time.RFC3339))
+		paramsCtx := newParameterCtx(rule, checkResults,alertItem.ID, alertItem.Created.UnixNano()/1e6)
 
 		if lastAlertItem.ID == "" || period > periodDuration {
 			actionResults, errCount := performChannels(rule.Channels.Normal, paramsCtx)
@@ -724,7 +724,7 @@ func (engine *Engine) Test(rule *alerting.Rule) ([]alerting.ActionExecutionResul
 		return nil, fmt.Errorf("check condition error:%w", err)
 	}
 	var actionResults []alerting.ActionExecutionResult
-	paramsCtx := newParameterCtx(rule, checkResults, util.GetUUID(), time.Now().Format(time.RFC3339))
+	paramsCtx := newParameterCtx(rule, checkResults, util.GetUUID(), time.Now().UnixNano()/1e6)
 	if len(rule.Channels.Normal) > 0 {
 		actionResults, _ = performChannels(rule.Channels.Normal, paramsCtx)
 	}else if len(rule.Channels.Escalation) > 0{
diff --git a/service/alerting/funcs/date.go b/service/alerting/funcs/date.go
index 52de96a4..468931ba 100644
--- a/service/alerting/funcs/date.go
+++ b/service/alerting/funcs/date.go
@@ -36,6 +36,8 @@ func dateInZone(fmt string, date interface{}, zone string) string {
 		t = time.Unix(int64(date), 0)
 	case int32:
 		t = time.Unix(int64(date), 0)
+	case string:
+		return date
 	}
 
 	loc, err := time.LoadLocation(zone)
diff --git a/service/alerting/funcs/function.go b/service/alerting/funcs/function.go
index 7eeaac87..7c0a15ad 100644
--- a/service/alerting/funcs/function.go
+++ b/service/alerting/funcs/function.go
@@ -4,7 +4,10 @@
 
 package funcs
 
-import "text/template"
+import (
+	"strings"
+	"text/template"
+)
 
 func GenericFuncMap() template.FuncMap {
 	gfm := make(map[string]interface{}, len(genericMap))
@@ -20,4 +23,6 @@ var genericMap = map[string]interface{}{
 	"to_fixed": toFixed,
 	"date": date,
 	"date_in_zone": dateInZone,
+	"to_upper": strings.ToUpper,
+	"to_lower": strings.ToLower,
 }