diff --git a/packages/core/lib/presentation/widget/inputs/unit_text_field.dart b/packages/core/lib/presentation/widget/inputs/unit_text_field.dart
index 4065fef..e1bc585 100644
--- a/packages/core/lib/presentation/widget/inputs/unit_text_field.dart
+++ b/packages/core/lib/presentation/widget/inputs/unit_text_field.dart
@@ -8,7 +8,7 @@ class UnitTextField extends StatefulWidget {
     super.key,
     required this.hint,
     required this.unit,
-    required this.onChanged,
+    this.onChanged,
     this.initialValue,
     this.controller,
     this.keyboardType,
@@ -20,6 +20,7 @@ class UnitTextField extends StatefulWidget {
     this.textStyle,
     this.textColor,
     this.inputFormatters,
+    this.validator
   });
 
   final String hint;
@@ -32,6 +33,7 @@ class UnitTextField extends StatefulWidget {
   final TextInputType? keyboardType;
   final TextInputAction? textInputAction;
   final List<TextInputFormatter>? inputFormatters;
+  final FormFieldValidator<String>? validator;
   final bool? enabled;
   final bool? readOnly;
   final int? maxLines;
@@ -81,7 +83,7 @@ class _UnitTextFieldState extends State<UnitTextField> {
           const SizedBox(width: 8),
 
           Expanded(
-            child: TextField(
+            child: TextFormField(
               controller: tmpController,
               keyboardType: TextInputType.number,
               textInputAction: widget.textInputAction,
@@ -92,6 +94,7 @@ class _UnitTextFieldState extends State<UnitTextField> {
               textAlign: TextAlign.center,
               textDirection: TextDirection.ltr,
               inputFormatters: widget.inputFormatters,
+              validator: widget.validator,
               style: AppFonts.yekan18.copyWith(color: AppColor.darkGreyNormalActive),
               decoration: const InputDecoration(
                 isDense: true,