diff --git a/front/app/src/common/crud/crud.module.ts b/front/app/src/common/crud/crud.module.ts
index 537bf865..4f53e47d 100644
--- a/front/app/src/common/crud/crud.module.ts
+++ b/front/app/src/common/crud/crud.module.ts
@@ -16,6 +16,7 @@ import { DateTypeComponent } from "./types/date.type";
 import { ApiService, CrudService } from "./crud.service";
 import { CrudFormlyJsonschemaService } from "./crud-formly-jsonschema.service";
 import { NgbModule} from "@ng-bootstrap/ng-bootstrap";
+import { allIcons, NgxBootstrapIconsModule } from "ngx-bootstrap-icons";
 import { JsonschemasService } from "./jsonschemas.service";
 import { MultiSchemaTypeComponent } from "./types/multischema.type";
 import { ForeignkeyTypeComponent } from "./types/foreignkey.type";
@@ -49,6 +50,7 @@ import { DictionaryService } from "./types/dictionary.service";
     HttpClientModule,
     FormsModule,
     NgbModule,
+    NgxBootstrapIconsModule.pick(allIcons),
     //BrowserAnimationsModule,
     ReactiveFormsModule,
     FormlyModule.forRoot({
diff --git a/front/app/src/common/crud/jsonschemas.service.ts b/front/app/src/common/crud/jsonschemas.service.ts
index dcac005a..8e77742d 100644
--- a/front/app/src/common/crud/jsonschemas.service.ts
+++ b/front/app/src/common/crud/jsonschemas.service.ts
@@ -38,7 +38,7 @@ export class JsonschemasService {
                 delete resource.properties[prop_name]
             } else if (this.is_reference(prop)) {
                 this.resolveReference(resource, prop);
-            } else if (prop.hasOwnProperty('oneOf')) {
+            } else if (this.is_union(prop)) {
                 for (let i in prop.oneOf) {
                     this.resolveReference(resource, prop.oneOf[i]);
                 }
diff --git a/front/app/src/common/crud/types/array.type.ts b/front/app/src/common/crud/types/array.type.ts
index eedad435..1f3b0382 100644
--- a/front/app/src/common/crud/types/array.type.ts
+++ b/front/app/src/common/crud/types/array.type.ts
@@ -7,36 +7,38 @@ import { FieldArrayType } from '@ngx-formly/core';
     <div>
       <label *ngIf="props.label" class="form-label">{{ props.label }}</label>
       <p *ngIf="props.description">{{ props.description }}</p>
-
       <div class="alert alert-danger" role="alert" *ngIf="showError && formControl.errors">
         <formly-validation-message [field]="field"></formly-validation-message>
       </div>
-      <div class="row">
-        <div *ngFor="let entry of field.fieldGroup; let i = index" class="card {{this.colSm}}">
-            <div class="card-header">
-                <div *ngIf="props['numbered']" class="float-start">
-                    <strong>{{ i + 1 }}</strong>
+      <div class="row row-cols-1 row-cols-md-{{this.itemsPerRow}} g-1">
+          <div *ngFor="let entry of field.fieldGroup; let i = index" class="col">
+                <div class="card">
+                    <div class="card-header">
+                        <div *ngIf="props['numbered']" class="float-start">
+                            <strong>{{ i + 1 }}</strong>
+                        </div>
+                        <div class="float-end">
+                            <button class="btn btn-primary btn-sm" [attr.disabled]="i == 0 ? 'disabled' : null" type="button" (click)="move(i, i-1)"><i-bs name="caret-up-fill"></i-bs></button>
+                            <button class="btn btn-primary btn-sm" [attr.disabled]="i == this.field.fieldGroup!.length-1 ? 'disabled' : null" type="button" (click)="move(i, i+1)"><i-bs name="caret-down-fill"></i-bs></button>
+                            <button class="btn btn-danger btn-sm" [attr.disabled]="field.props!['removable'] === false ? 'disabled' : null" type="button" (click)="remove(i)"><i-bs name="x-octagon-fill"></i-bs></button>
+                        </div>
+                    </div>
+                    <div class="card-body">
+                        <formly-field class="col" [field]="entry"></formly-field>
+                    </div>
                 </div>
-                <div class="float-end">
-                    <button class="btn btn-primary btn-sm" [attr.disabled]="i == 0 ? 'disabled' : null" type="button" (click)="move(i, i-1)">UP</button>
-                    <button class="btn btn-primary btn-sm" [attr.disabled]="i == this.field.fieldGroup!.length-1 ? 'disabled' : null" type="button" (click)="move(i, i+1)">DOWN</button>
-                    <button class="btn btn-danger btn-sm" [attr.disabled]="field.props!['removable'] === false ? 'disabled' : null" type="button" (click)="remove(i)">-</button>
-                </div>
-            </div>
-            <div class="card-body">
-                <formly-field class="col" [field]="entry"></formly-field>
             </div>
         </div>
-      </div>
-        <button class="btn btn-success col-sm-12" type="button" (click)="add()">+</button>
+        <button class="btn btn-success col-sm-12" type="button" (click)="add()"><i-bs name="plus-square-fill"></i-bs></button>
     </div>
   `,
 })
 export class ArrayTypeComponent extends FieldArrayType implements OnInit {
     colSm: string = "col-sm-6"
+    itemsPerRow = 2;
     ngOnInit() {
         if (this.field.props.hasOwnProperty('items-per-row')) {
-            this.colSm = `col-sm-${12 / this.field.props['items-per-row']}`
+            this.itemsPerRow = this.field.props['items-per-row']
         }
     }
 
diff --git a/front/app/src/common/crud/types/foreignkey.type.ts b/front/app/src/common/crud/types/foreignkey.type.ts
index 53246017..57df1b7f 100644
--- a/front/app/src/common/crud/types/foreignkey.type.ts
+++ b/front/app/src/common/crud/types/foreignkey.type.ts
@@ -43,10 +43,10 @@ import {DictionaryService} from "./dictionary.service";
                        readonly="readonly"
                 />
                 <div class="input-group-append">
-                    <button class="btn btn-info" type="button" (click)="see(foreignModal)"><span class="cil-zoom btn-icon"></span>See</button>
+                    <button class="btn btn-info" type="button" (click)="see(foreignModal)"><span class="cil-zoom btn-icon"></span><i-bs name="zoom-in"></i-bs></button>
                 </div>
                 <div class="input-group-append">
-                    <button class="btn btn-danger" type="button" (click)="remove()"><span class="cil-x btn-icon mr-2"></span>Remove</button>
+                    <button class="btn btn-danger" type="button" (click)="remove()"><span class="cil-x btn-icon mr-2"></span><i-bs name="eraser-fill"></i-bs></button>
                 </div>
             </div>
             <formly-form *ngIf="this.hasValue() && this.displayedFields" [form]="this.foreignForm" [fields]="this.foreignFields" [model]="this.foreignModel"></formly-form>