diff --git a/store2realm/src/main/java/com/playmoweb/store2realm/dao/RealmDao.java b/store2realm/src/main/java/com/playmoweb/store2realm/dao/RealmDao.java
index a6edd90..38b0544 100644
--- a/store2realm/src/main/java/com/playmoweb/store2realm/dao/RealmDao.java
+++ b/store2realm/src/main/java/com/playmoweb/store2realm/dao/RealmDao.java
@@ -62,11 +62,17 @@ public Flowable<Optional<List<T>>> getAll(List<T> items) {
 
         if(items.size() > 0){
             String paramName = items.get(0).getUniqueIdentifierName();
-            Integer[] keys = new Integer[items.size()];
+            Object[] keys = new Object[items.size()];
             for(int i = 0; i < items.size(); i++){
                 keys[i] = items.get(i).getUniqueIdentifier();
             }
-            query.in(paramName, keys);
+
+            Object valueType = items.get(0).getUniqueIdentifier();
+            if(valueType instanceof String){
+                query.in(paramName, (String[]) keys);
+            } else if(valueType instanceof Integer){
+                query.in(paramName, (Integer[]) keys);
+            }
         }
 
         List<T> copies = realm.copyFromRealm(query.findAll());
diff --git a/store2realm/src/main/java/com/playmoweb/store2realm/model/HasId.java b/store2realm/src/main/java/com/playmoweb/store2realm/model/HasId.java
index 13cff3e..fb3243d 100644
--- a/store2realm/src/main/java/com/playmoweb/store2realm/model/HasId.java
+++ b/store2realm/src/main/java/com/playmoweb/store2realm/model/HasId.java
@@ -3,7 +3,7 @@
 /**
  * Created by thibaud on 13/09/2017.
  */
-public interface HasId {
-    int getUniqueIdentifier();
+public interface HasId<T> {
+    T getUniqueIdentifier();
     String getUniqueIdentifierName();
 }