diff --git a/curriculumsearch/src/main/java/com/roshka/controller/PostulanteController.java b/curriculumsearch/src/main/java/com/roshka/controller/PostulanteController.java
index 9a09b88..59e7483 100644
--- a/curriculumsearch/src/main/java/com/roshka/controller/PostulanteController.java
+++ b/curriculumsearch/src/main/java/com/roshka/controller/PostulanteController.java
@@ -47,18 +47,23 @@ public class PostulanteController {
     InstitucionRepository institucionRepository;
     DepartamentoRepository depRepo;
     CiudadRepository ciuRepo;
+    EstudioRepository estudioRepository;
+    PostulanteTecnologiaRepository postulanteTecnologiaRepository;
 
     @Autowired
     public PostulanteController(
             PostulanteRepository post, TecnologiaRepository tecRepo, ExperienciaRepository expRepo,
             InstitucionRepository institucionRepository, DepartamentoRepository depRepo,
-            CiudadRepository ciuRepo) {
+            CiudadRepository ciuRepo, EstudioRepository estudioRepository,
+            PostulanteTecnologiaRepository postulanteTecnologiaRepository) {
         this.post = post;
         this.tecRepo = tecRepo;
         this.expRepo = expRepo;
         this.institucionRepository = institucionRepository;
         this.depRepo = depRepo;
         this.ciuRepo = ciuRepo;
+        this.estudioRepository = estudioRepository;
+        this.postulanteTecnologiaRepository = postulanteTecnologiaRepository;
     }
 
     @RequestMapping("home")
@@ -121,11 +126,19 @@ public class PostulanteController {
 
     @PostMapping(value = "/postulante",consumes = "application/json")
     public String guardarPostulante(@RequestBody Postulante postulante){
+        //Codigo encargado de modificar postulacion si se envia mismo CI
+        Postulante postulantex = post.findByNroDocument(postulante.getnroDocument());
+        if(postulantex != null){
+            estudioRepository.findByPostulante(postulantex).forEach(x -> estudioRepository.delete(x));
+            expRepo.findByPostulante(postulantex).forEach(x -> expRepo.delete(x));
+            postulanteTecnologiaRepository.findByPostulante(postulantex).forEach(x -> postulanteTecnologiaRepository.delete(x));
+            postulante.setId(postulantex.getId());
+        }
         postulante.getTecnologias().stream().filter(
                     tec -> tec.getTecnologia().getId() != 0 
             ).forEach(
                     tec -> tec.setTecnologia(tecRepo.getById(tec.getTecnologia().getId()))
-                    );
+        );
         for(Estudio estudio: postulante.getEstudios()){
             String nombreIns = "";
             nombreIns = estudio.getInstitucion().getNombre().toLowerCase();
diff --git a/curriculumsearch/src/main/java/com/roshka/modelo/PostulanteTecnologia.java b/curriculumsearch/src/main/java/com/roshka/modelo/PostulanteTecnologia.java
index dca587e..797adcc 100644
--- a/curriculumsearch/src/main/java/com/roshka/modelo/PostulanteTecnologia.java
+++ b/curriculumsearch/src/main/java/com/roshka/modelo/PostulanteTecnologia.java
@@ -33,7 +33,7 @@ public class PostulanteTecnologia {
     @JoinColumn
    private Tecnologia tecnologia;
 
-    @ManyToOne()
+    @ManyToOne(cascade = CascadeType.ALL)
    @JoinColumn
     @JsonBackReference(value = "postulantetecnologia-postulante")
     private Postulante postulante;
diff --git a/curriculumsearch/src/main/java/com/roshka/modelo/ReferenciaPersonal.java b/curriculumsearch/src/main/java/com/roshka/modelo/ReferenciaPersonal.java
index 75aca3b..2c907e7 100644
--- a/curriculumsearch/src/main/java/com/roshka/modelo/ReferenciaPersonal.java
+++ b/curriculumsearch/src/main/java/com/roshka/modelo/ReferenciaPersonal.java
@@ -1,13 +1,6 @@
 package com.roshka.modelo;
 
-import javax.persistence.Column;
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
-import javax.persistence.JoinColumn;
-import javax.persistence.ManyToOne;
-import javax.persistence.Table;
+import javax.persistence.*;
 import javax.validation.constraints.NotBlank;
 
 import com.fasterxml.jackson.annotation.JsonBackReference;
@@ -31,7 +24,7 @@ public class ReferenciaPersonal {
     @Column(name = "relacion")
     private String relacion;
 
-    @ManyToOne(optional = false)
+    @ManyToOne(cascade = CascadeType.ALL, optional = false)
     @JoinColumn
     @JsonBackReference
     private Postulante postulante;
diff --git a/curriculumsearch/src/main/java/com/roshka/repositorio/EstudioRepository.java b/curriculumsearch/src/main/java/com/roshka/repositorio/EstudioRepository.java
index 50d9336..ad25f79 100644
--- a/curriculumsearch/src/main/java/com/roshka/repositorio/EstudioRepository.java
+++ b/curriculumsearch/src/main/java/com/roshka/repositorio/EstudioRepository.java
@@ -1,10 +1,14 @@
 package com.roshka.repositorio;
 
+import com.roshka.modelo.Postulante;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import com.roshka.modelo.Estudio;
 
+import java.util.List;
+
 public interface EstudioRepository extends JpaRepository<Estudio,Long>{
 
+    public List<Estudio> findByPostulante(Postulante postulante);
 	
 }
diff --git a/curriculumsearch/src/main/java/com/roshka/repositorio/ExperienciaRepository.java b/curriculumsearch/src/main/java/com/roshka/repositorio/ExperienciaRepository.java
index cebad2a..5eadaaf 100644
--- a/curriculumsearch/src/main/java/com/roshka/repositorio/ExperienciaRepository.java
+++ b/curriculumsearch/src/main/java/com/roshka/repositorio/ExperienciaRepository.java
@@ -1,5 +1,6 @@
 package com.roshka.repositorio;
 
+import com.roshka.modelo.Postulante;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 
@@ -9,4 +10,6 @@ import com.roshka.modelo.Experiencia;
 
 public interface ExperienciaRepository extends JpaRepository<Experiencia,Long> {
     public List<Experiencia> findByCargoLike(String cargo);
+
+    public List<Experiencia> findByPostulante(Postulante postulante);
 }
diff --git a/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteRepository.java b/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteRepository.java
index cb9ef21..3cc8530 100644
--- a/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteRepository.java
+++ b/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteRepository.java
@@ -12,6 +12,8 @@ import com.roshka.modelo.Postulante;
 
 public interface PostulanteRepository extends JpaRepository<Postulante,Long> {
 
+    public Postulante findByNroDocument(String ci);
+
     @Query("select p from Postulante p join p.estudios e on e.institucion.nombre LIKE %?1%")
 	public List<Postulante> findByInstitucionEstudio(String institucion);
     
diff --git a/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteTecnologiaRepository.java b/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteTecnologiaRepository.java
index 8a295b0..012f485 100644
--- a/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteTecnologiaRepository.java
+++ b/curriculumsearch/src/main/java/com/roshka/repositorio/PostulanteTecnologiaRepository.java
@@ -1,12 +1,15 @@
 package com.roshka.repositorio;
 
+import com.roshka.modelo.Postulante;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import com.roshka.modelo.PostulanteTecnologia;
 
-public interface PostulanteTecnologiaRepository extends JpaRepository<PostulanteTecnologia,Long>{
+import java.util.List;
 
+public interface PostulanteTecnologiaRepository extends JpaRepository<PostulanteTecnologia,Long>{
 
+    public List<PostulanteTecnologia> findByPostulante(Postulante postulante);
 	
 	
 }
diff --git a/curriculumsearch/src/main/webapp/jsp/postulante-form.jsp b/curriculumsearch/src/main/webapp/jsp/postulante-form.jsp
index e6f19ca..55527cf 100644
--- a/curriculumsearch/src/main/webapp/jsp/postulante-form.jsp
+++ b/curriculumsearch/src/main/webapp/jsp/postulante-form.jsp
@@ -395,7 +395,7 @@
                   
                   <input type="text" class="form-control d-none" name="tecnologia-nombre" id="tecnologia-nombre" >
                   <label for="nivel" class="form-label">Nivel</label>
-                  <input type="number" class="form-control" name="nivel" id="nivel" required>
+                  <input type="range" class="form-range" name="nivel" id="nivel" min="1" max="5" required>
               </form>
           </div>
           <div class="modal-footer">