--- attachments.js.orig	2018-06-22 00:24:07.233932465 +0530
+++ attachments.js	2018-06-22 00:28:38.935785171 +0530
@@ -4,7 +4,7 @@
 function addFile(inputEl, file, eagerUpload) {
   var attachmentsFields = $(inputEl).closest('.attachments_form').find('.attachments_fields');
   var addAttachment = $(inputEl).closest('.attachments_form').find('.add_attachment');
-  var maxFiles = ($(inputEl).attr('multiple') == 'multiple' ? 10 : 1);
+  var maxFiles = ($(inputEl).attr('multiple') == 'multiple' ? 100 : 1);
 
   if (attachmentsFields.children().length < maxFiles) {
     var attachmentId = addFile.nextAttachmentId++;
@@ -165,7 +165,13 @@
   if (sizeExceeded) {
     window.alert(maxFileSizeExceeded);
   } else {
-    $.each(files, function() {addFile(inputEl, this, true);});
+    $.each(files, function() {
+      var ret = addFile(inputEl, this, true);
+      if (ret == null) { 
+        window.alert("Reached max number (100) of simulatenous uploaded files");
+        return false; 
+      }
+    });
   }
   return sizeExceeded;
 }