diff --git a/agents/agentreq.go b/agents/agentreq.go
index 8e9bc9709..6a297b942 100644
--- a/agents/agentreq.go
+++ b/agents/agentreq.go
@@ -155,8 +155,14 @@ func (aReq *AgentRequest) ParseField(
 		if len(cfgFld.Value) != 2 {
 			return nil, fmt.Errorf("invalid arguments <%s>", utils.ToJSON(cfgFld.Value))
 		} else {
-			strVal1, err := aReq.FieldAsString(strings.Split(cfgFld.Value[0].Rules, utils.NestingSep))
-			strVal2, err := aReq.FieldAsString(strings.Split(cfgFld.Value[1].Rules, utils.NestingSep))
+			strVal1, err := cfgFld.Value[0].ParseDataProvider(aReq)
+			if err != nil {
+				return "", err
+			}
+			strVal2, err := cfgFld.Value[1].ParseDataProvider(aReq)
+			if err != nil {
+				return "", err
+			}
 			tEnd, err := utils.ParseTimeDetectLayout(strVal1, cfgFld.Timezone)
 			if err != nil {
 				return "", err
diff --git a/agents/httpagent_it_test.go b/agents/httpagent_it_test.go
index e9092ba53..8142583be 100644
--- a/agents/httpagent_it_test.go
+++ b/agents/httpagent_it_test.go
@@ -152,7 +152,7 @@ func TestHAitCDRmtcall(t *testing.T) {
 		t.Errorf("expecting: <%s>, received: <%s>", string(eXml), string(body))
 	}
 	rply.Body.Close()
-	time.Sleep(10 * time.Millisecond)
+	time.Sleep(50 * time.Millisecond)
 	var cdrs []*engine.ExternalCDR
 	req := utils.RPCCDRsFilter{RunIDs: []string{utils.META_DEFAULT}}
 	if err := haRPC.Call("ApierV2.GetCdrs", req, &cdrs); err != nil {
diff --git a/data/conf/samples/httpagent/httpagent.json b/data/conf/samples/httpagent/httpagent.json
index 60773ab69..7cfd6be3d 100644
--- a/data/conf/samples/httpagent/httpagent.json
+++ b/data/conf/samples/httpagent/httpagent.json
@@ -72,7 +72,7 @@
 					{"id": "AnswerTime", "field_id": "SetupTime", "type": "*composed", 
 						"value": "~*req.timestamp", "mandatory": true},
 					{"id": "Usage", "field_id": "Usage", "type": "*composed", 
-						"value": "~*req.leg_duration;^s", "mandatory": true},
+						"value": "~*req.leg_duration;s", "mandatory": true},
 				],
 				"reply_fields":[
 					{"id": "CDR_ID", "field_id": "CDR_RESPONSE.CDR_ID", "type": "*composed",