diff --git a/packages/playground/src/components/smtp_server.vue b/packages/playground/src/components/smtp_server.vue
index 0ec0f099a8..3896d48cd4 100644
--- a/packages/playground/src/components/smtp_server.vue
+++ b/packages/playground/src/components/smtp_server.vue
@@ -26,8 +26,8 @@
           (v: string) => {
             return (
               validators.isEmail('Please provide a valid email address.')(v) &&
-              (validators.IsAlphaExpectDashAndUnderscore(
-                'Username should consist of letters, dashs and underscores only.' 
+              (validators.IsAlphanumericExpectDashAndUnderscore(
+                'Username should consist of letters, numbers, dashs and underscores only.' 
               )(v))
             );
           },
diff --git a/packages/playground/src/utils/validators.ts b/packages/playground/src/utils/validators.ts
index cce255c217..fa9c86db60 100644
--- a/packages/playground/src/utils/validators.ts
+++ b/packages/playground/src/utils/validators.ts
@@ -125,7 +125,7 @@ export function IsAlphanumericExpectUnderscore(msg: string) {
  * @returns {(value: string) => { message: string, requiredTrue: boolean }} - A function that takes a string value as input and returns an object with an error message and a requiredTrue flag if the validation fails.
  */
 
-export function IsAlphaExpectDashAndUnderscore(msg: string) {
+export function IsAlphanumericExpectDashAndUnderscore(msg: string) {
   return (value: string) => {
     if (!/^[a-zA-Z0-9_-]+$/.test(value)) {
       return { message: msg, requiredTrue: true };
diff --git a/packages/playground/tests/utils/validators/IsAlphaExpectDashAndUnderscore.test.ts b/packages/playground/tests/utils/validators/IsAlphaExpectDashAndUnderscore.test.ts
index 765efc6b88..01d98227fe 100644
--- a/packages/playground/tests/utils/validators/IsAlphaExpectDashAndUnderscore.test.ts
+++ b/packages/playground/tests/utils/validators/IsAlphaExpectDashAndUnderscore.test.ts
@@ -1,14 +1,16 @@
 import { describe, expect, it } from "vitest";
 
-import { IsAlphaExpectDashAndUnderscore } from "../../../src/utils/validators";
+import { IsAlphanumericExpectDashAndUnderscore } from "../../../src/utils/validators";
 
-const validator = IsAlphaExpectDashAndUnderscore("Username should consist of letters, dashs and underscores only.");
+const validator = IsAlphanumericExpectDashAndUnderscore(
+  "Username should consist of letters, numbers, dashs and underscores only.",
+);
 
-describe("IsAlphaExpectDashAndUnderscore", () => {
+describe("IsAlphanumericExpectDashAndUnderscore", () => {
   it("returns an error message for input with spaces", () => {
     const result = validator("hello world!");
     expect(result).toEqual({
-      message: "Username should consist of letters, dashs and underscores only.",
+      message: "Username should consist of letters, numbers, dashs and underscores only.",
       requiredTrue: true,
     });
   });
@@ -16,7 +18,7 @@ describe("IsAlphaExpectDashAndUnderscore", () => {
   it("returns an error message for input with special characters", () => {
     const result = validator("hello@world");
     expect(result).toEqual({
-      message: "Username should consist of letters, dashs and underscores only.",
+      message: "Username should consist of letters, numbers, dashs and underscores only.",
       requiredTrue: true,
     });
   });