diff --git a/lib/api_web/controllers/get_hash.ex b/lib/api_web/controllers/get_hash.ex
index e3f67a9..158b1ff 100644
--- a/lib/api_web/controllers/get_hash.ex
+++ b/lib/api_web/controllers/get_hash.ex
@@ -4,18 +4,22 @@ defmodule ApiWeb.GetHash do
   import Ecto.Query
   require Logger
 
-  def index(conn, %{"study" => study}) do
+  def index(conn, %{"study" => accessionnumber}) do
     Envar.load(".env")
     Envar.require_env_file(".env")
 
+    Logger.info("Accession get hash -> #{accessionnumber}")
+
     studyidentifier = Envar.get("IDENTIFIERFIELD") || "IDSTUDY"
 
+    # En caso de recibir idstudy en get hash -> where: s.accessionnumber == ^String.to_integer(accessionnumber),
+
     query =
       if studyidentifier == "IDSTUDY" do
         from s in "study",
           join: p in "patient",
           on: p.idpatient == s.idpatient,
-          where: s.idstudy == ^String.to_integer(study),
+          where: s.accessionnumber == ^accessionnumber,
           select: %{
             idstudy: s.idstudy,
             patientid: p.patientid
@@ -24,7 +28,7 @@ defmodule ApiWeb.GetHash do
         from s in "study",
           join: p in "patient",
           on: p.idpatient == s.idpatient,
-          where: s.accessionnumber == ^study,
+          where: s.accessionnumber == ^accessionnumber,
           select: %{
             accessionnumber: s.accessionnumber,
             patientid: p.patientid