From b49af31d2c5219118a4adc8ab4906106d19ed99a Mon Sep 17 00:00:00 2001
From: ibal <ilyas.bal@aubex.de>
Date: Tue, 8 Nov 2022 21:54:51 +0100
Subject: [PATCH] fix

---
 lib/main.dart | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/main.dart b/lib/main.dart
index 5bd0cd1..e4e5609 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -143,5 +143,5 @@ class MyCustomFormState extends StatelessWidget with InputValidationMixin {
 }
 
 mixin InputValidationMixin {
-  bool isInputValid(String value) => new RegExp(r'[0-9]+.?[0-9]*').hasMatch(value);
+  bool isInputValid(String value) => !new RegExp(r'[0-9]+.?[0-9]*').hasMatch(value);
 }