diff --git a/2.2.0-draft/demo/TDTtranslator.js b/2.2.0-draft/demo/TDTtranslator.js
index 3002631..5fac403 100644
--- a/2.2.0-draft/demo/TDTtranslator.js
+++ b/2.2.0-draft/demo/TDTtranslator.js
@@ -1899,7 +1899,13 @@ class TDTtranslator {
                     case "filter": {
                         console.debug("Append the filter value of "+options['filter']);
                         if (outputLevel == "BINARY") {
-                            finalOutputArray.push(TDTtranslator.prePad(parseInt(options['filter']).toString(2),"0",3));
+                            let bitLength = 3;
+                            for (let field of outputOption.field) {
+                                if (field.name == 'filter') {
+                                    bitLength = field.bitLength;
+                                }
+                            }
+                            finalOutputArray.push(TDTtranslator.prePad(parseInt(options['filter']).toString(2),"0",bitLength));
                         } else {
                             finalOutputArray.push(options['filter']);
                         }