diff --git a/validation/validationRegularExpressions.json b/validation/validationRegularExpressions.json
index 4eb7c3f..42c93dd 100644
--- a/validation/validationRegularExpressions.json
+++ b/validation/validationRegularExpressions.json
@@ -1,3 +1,3 @@
 {
-	
+	"code": "^[a-z_0-9]{0,64}$"
 }
\ No newline at end of file