1 files changed, 2 insertions, 0 deletions
diff --git a/bin/is.pl b/bin/is.pl
index 21502022..edb2f0f0 100644
--- a/bin/is.pl
+++ b/bin/is.pl
@@ -53,6 +53,7 @@ require "bin/io.pl";
 1;
 
 # end of main
+sub on_update{}
 
 sub add {
     if ($form->{type} eq 'credit_invoice'){
@@ -831,6 +832,7 @@ qq|<td align=center><input name="memo_$i" size=11 value="$form->{"memo_$i"}"></t
 }
 
 sub update {
+    on_update();
     $form->{taxes} = {};
     $form->{exchangerate} =
       $form->parse_amount( \%myconfig, $form->{exchangerate} );