Cannot update DropdownButtonFormField field value in flutter with getx obs - flutter

Question

I am using getx obs with fluter and the below is json response.
[{"id":1,"designation":"Deputy General Manager"},{"id":2,"designation":"Executive Director, Technical Operations","designation_short_code":"ED, TO"},{"id":3,"designation":"Manager","designation_short_code":"M"},{"id":4,"designation":"Sr. Manager","designation_short_code":"Sr. M"}]
In controller I am using--
var listData = List<dynamic>.empty(growable: true).obs;
var designation = 1.obs;
void setDesignation(int value) {
designation.value = value;
}
I am getting the above json response based on api call under listData.
In UI I am using the below code..
Obx(() => DropdownButtonFormField<dynamic>(
decoration: InputDecoration(
hintText: 'Designation',
labelText: 'Select Designation',
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(8),
),
filled: true,
fillColor: Colors.white,
errorStyle: TextStyle(color: Colors.yellow),
),
hint: Text(
'Select Designation',
),
onChanged: (selectedValue) {
designation_controller
.setDesignation(selectedValue);
},
value:
designation_controller.designation.value.toInt(),
items: designation_controller.listData.map((map) {
return DropdownMenuItem(
child: Text(map['designation']),
value: map['id'],
);
}).toList(),
)),
My problem is whenever I select designation it is not updating though my api end point is hitting with 200 response.
Can anyone help me please.
Thanks in advnace.

Answer 1

I have fixed problem. My problem was in the below code
updateData(
controller.userData[0]['id'],
controller.designationEdittingTextController.text
)
I have changed controller.designationEdittingTextController.text to controller.designationEdit.value as below
updateData(
controller.userData[0]['id'],
controller.designationEdit.value
)
Thanks