diff --git a/global-functions.rsc b/global-functions.rsc
index 876f2cd..709a615 100644
--- a/global-functions.rsc
+++ b/global-functions.rsc
@@ -48,6 +48,7 @@
 :global IsTimeSync;
 :global LogPrintExit2;
 :global LogPrintOnce;
+:global MAX;
 :global MkDir;
 :global NotificationFunctions;
 :global ParseDate;
@@ -680,6 +681,12 @@
   $LogPrintExit2 $Severity $Name $Message false;
 }
 
+# get max value
+:set MAX do={
+  :if ($1 > $2) do={ :return $1; }
+  :return $2;
+}
+
 # create directory
 :set MkDir do={
   :local Path [ :tostr $1 ];