fix DA-195

lib/screens/patients/patient_search_screen.dart

@@ -42,6 +42,7 @@ class _PatientSearchScreenState extends State<PatientSearchScreen> {
   String itemText2 = '';
   final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
   bool _autoValidate = false;
+  bool onlyArrived = false;
 
   var _patientSearchFormValues = PatientModel(
       FirstName: "0",
@@ -502,10 +503,14 @@ class _PatientSearchScreenState extends State<PatientSearchScreen> {
                                   height: 25,
                                   width: 25,
                                   child: Checkbox(
-                                      value: true,
+                                      value: onlyArrived,
                                       checkColor: HexColor("#2A930A"),
                                       activeColor: Colors.white,
-                                      onChanged: (bool newValue) {}),
+                                      onChanged: (bool newValue) {
+                                        setState(() {
+                                          onlyArrived = newValue;
+                                        });
+                                      }),
                                 ),
                                 SizedBox(
                                   width: 12,