diff --git a/app/Views/report_bds.php b/app/Views/report_bds.php
index 96a3f30b..35d114a7 100644
--- a/app/Views/report_bds.php
+++ b/app/Views/report_bds.php
@@ -232,14 +232,22 @@ $(document).ready(function() {
                     extend: 'csv',
                     text: 'CSV',
                     title: 'Policy-Tranction-BDS-List',
-                    customizeData: function (data) {
-                        for (var i = 0; i < data.body.length; i++) {
-                            for (var j = 0; j < data.body[i].length; j++) {
-                                // force text format by prefixing a tab
-                                data.body[i][j] = '\t' + data.body[i][j];
+                    exportOptions: {
+                        columns: ':visible', // or specify exact columns [0,1,2,...]
+                        format: {
+                            body: function (data, row, column, node) {
+                                // Force K and L columns to string
+                                if (column === 10 || column === 11) {
+                                    // Option 1: prepend single quote
+                                    return '\u200C' + data;
+
+                                    // Option 2: use Excel formula trick
+                                    // return '="' + data + '"';
+                                }
+                                return data;
                             }
                         }
-                    }
+                    },                   
                 },
                 {
                     extend: 'excel',