diff --git a/ReflexUtils.ftl b/ReflexUtils.ftl
index afa299e..a22ce70 100644
--- a/ReflexUtils.ftl
+++ b/ReflexUtils.ftl
@@ -9,6 +9,23 @@
   <#return dateutc?datetime.iso?iso_nz(locale)>
 </#function>
 
+<#-- -------------------------------------------------------------------------------------------- -->
+<#-- Add second to dateTime ex: AddSecondsToDatetime("2025-11-17T09:15:00Z"?datetime.iso, 61)     -->
+<#-- -------------------------------------------------------------------------------------------- -->
+<#function AddSecondsToDatetime date seconds>
+    <#assign timeInMilliseconds = (1000 * seconds) >
+    <#assign aDate = date?long + timeInMilliseconds>
+    <#return aDate?number_to_datetime>
+</#function>
+
+<#-- -------------------------------------------------------------------------------------------- -->
+<#-- Duration between two datetimes in second                                                     -->
+<#-- -------------------------------------------------------------------------------------------- -->
+<#function DurationBetweenTwoDatetimeInSeconds startDate endDate>
+    <#return (endDate?long - startDate?long) / 1000 >
+</#function>
+
+
 <#-- --------------------------------------------------------------------------------------- -->
 <#-- Split email reflex into json array string                                               -->
 <#--  Example : splitemail "john.doe@hardis-group.com,;         name@hardis-group.com"       -->