diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.users/public/js/listing.js b/components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.users/public/js/listing.js
index ba568f3fec0..7d8ec0622d0 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.users/public/js/listing.js
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.ui/src/main/resources/jaggeryapps/devicemgt/app/pages/cdmf.page.users/public/js/listing.js
@@ -16,6 +16,18 @@
  * under the License.
  */
 
+/**
+ * Checks if provided input is valid against RegEx input.
+ *
+ * @param regExp Regular expression
+ * @param inputString Input string to check
+ * @returns {boolean} Returns true if input matches RegEx
+ */
+function inputIsValid(regExp, inputString) {
+    regExp = new RegExp(regExp);
+    return regExp.test(inputString);
+}
+
 $(function () {
     var sortableElem = '.wr-sortable';
     $(sortableElem).sortable({