I have MainActivity where I declare editTextValue as ObservableField
I want to get it with editTextValue.get() on button click and pass it to another function. But I am always getting empty.

     class MainActivity : AppCompatActivity() {
          var editTextValue = ObservableField<String>("")
            
            if(editTextValue.get()!!.isEmpty()){
                println("WHY IS ITNULL")
                return@setOnClickListener
            }

}

and In my xml layout I have defined a variable activity and set the text of editText as,

 <?xml version="1.0" encoding="utf-8"?>
    <layout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools">
        <data>
            <variable
                name="activity"
                type="com.example.ashishgpt.MainActivity" />
        </data>
        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#1C1B1F"
            tools:context=".MainActivity">
    
            <androidx.appcompat.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="409dp"
                android:layout_height="wrap_content"
                android:background="#333333"
                android:minHeight="?attr/actionBarSize"
                android:theme="?attr/actionBarTheme"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:title="AshishGpt"
                app:titleTextColor="#FFFFFF" />
    
            <EditText
                android:id="@+id/editTextText"
                android:layout_width="364dp"
                android:layout_height="53dp"
                android:layout_marginStart="1dp"
                android:layout_marginEnd="3dp"
                android:layout_marginBottom="2dp"
                android:background="#333333"
                android:ems="10"
                android:hint="Enter your prompt here"
                android:text="@={activity.editTextValue}"
                android:inputType="text"
                android:paddingStart="10dp"
                android:textColor="#FBFBFB"
                android:textColorHint="#D1CACA"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toStartOf="@+id/imageButton"
                app:layout_constraintStart_toStartOf="parent" />
        

No matter what I type in textenter code herefield, it prints empty on button click.
Is there a point I am missing?