PL/SQL - ANONYMOUS BLOCK, UPDATE COLUMNS

Declare
   V_dept_id xxdtj_Employees.department_Id%Type:=10;
Begin
   Update Xxdtj_Employees Set Salary=Salary + 1000
   Where Department_Id=V_dept_id;
   Dbms_Output.Put_Line(V_DEPT_ID);
End;

OUTPUT :
   10