diff --git a/src/core/features/reportbuilder/components/report-column/report-column.ts b/src/core/features/reportbuilder/components/report-column/report-column.ts
index cf5575c3d..4006702e0 100644
--- a/src/core/features/reportbuilder/components/report-column/report-column.ts
+++ b/src/core/features/reportbuilder/components/report-column/report-column.ts
@@ -12,25 +12,31 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import { Component, EventEmitter, Input, Output } from '@angular/core';
+import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core';
 
 @Component({
     selector: 'core-report-builder-report-column',
     templateUrl: './report-column.html',
     styleUrls: ['./report-column.scss'],
 })
-export class CoreReportBuilderReportColumnComponent {
+export class CoreReportBuilderReportColumnComponent implements OnInit {
 
     @Input() isExpanded = false;
     @Input() isExpandable = false;
     @Input() showFirstTitle = false;
     @Input() columnIndex!: number;
     @Input() rowIndex!: number;
-    @Input() column!: string;
+    @Input() column!: string | number;
     @Input() contextId!: number;
     @Input() header!: string;
     @Output() onToggleRow: EventEmitter<number> = new EventEmitter();
 
+    ngOnInit(): void {
+        if (typeof this.column === 'number') {
+            this.column = this.column.toString();
+        }
+    }
+
     /**
      * Emits row click
      */
diff --git a/src/core/features/reportbuilder/services/reportbuilder.ts b/src/core/features/reportbuilder/services/reportbuilder.ts
index 2564e25cc..601a89427 100644
--- a/src/core/features/reportbuilder/services/reportbuilder.ts
+++ b/src/core/features/reportbuilder/services/reportbuilder.ts
@@ -232,7 +232,7 @@ export interface CoreReportBuilderRetrieveReportMapped extends Omit<CoreReportBu
 export type CoreReportBuilderReportDataWSResponse = {
     headers: string[]; // Headers.
     rows: { // Rows.
-        columns: string[]; // Columns.
+        columns: string | number[]; // Columns.
         isExpanded: boolean;
     }[];
     totalrowcount: number; // Totalrowcount.