diff --git a/RFXtoRP_HsrCarrierApt_SiteForceUpdateAppointment.ftl b/RFXtoRP_HsrCarrierApt_SiteForceUpdateAppointment.ftl
index d9b8359..4e75dba 100644
--- a/RFXtoRP_HsrCarrierApt_SiteForceUpdateAppointment.ftl
+++ b/RFXtoRP_HsrCarrierApt_SiteForceUpdateAppointment.ftl
@@ -35,6 +35,28 @@
 		<#else>
 			"Reason": "no commission", <#-- à changer -->
         </#if>
+	"Slots": [{
+			<#-- calcul de de la durée en fonction des start et end time-->
+			    "DurationInSeconds": "${duration}",
+			<#if carrier_apt.unloading_appointment == "true" && carrier_apt.load_appointment == "false" >
+			    <#if carrier_apt.planned_unloading_start_datetime?starts_with("00") || carrier_apt.planned_unloading_start_datetime?contains("-00-")>
+			       <#stop "planned_unloading_start_datetime field of appointmend is not initialized" >
+		       </#if>
+
+				"StartDateTime": "${carrier_apt.planned_unloading_start_datetime}"
+			<#else>
+				<#if carrier_apt.unloading_appointment == "false" && carrier_apt.load_appointment == "true">
+			    	<#if carrier_apt.planned_load_start_datetime?starts_with("00") || carrier_apt.planned_load_start_datetime?contains("-00-")>
+			       		<#stop "planned_load_start_datetime field of appointmend is not initialized" >
+		       		</#if>
+			   		"StartDateTime": "${carrier_apt.planned_load_start_datetime}"
+				<#else>
+					<#if carrier_apt.unloading_appointment == "true" && carrier_apt.load_appointment == "true">
+						<#stop "Not managed">
+					</#if>
+				</#if>
+			</#if>
+		}]
 
 	}
 ]
\ No newline at end of file