diff --git a/packages/nodes-base/nodes/Set/v2/helpers/utils.ts b/packages/nodes-base/nodes/Set/v2/helpers/utils.ts
index fd4f3c62bf..31943b0fbf 100644
--- a/packages/nodes-base/nodes/Set/v2/helpers/utils.ts
+++ b/packages/nodes-base/nodes/Set/v2/helpers/utils.ts
@@ -35,15 +35,28 @@ const configureFieldHelper = (dotNotation?: boolean) => {
 			},
 		};
 	} else {
+		const sanitazeKey = (item: IDataObject, key: string) => {
+			if (item[key] !== undefined) {
+				return key;
+			}
+
+			if (key.startsWith("['") && key.endsWith("']")) {
+				key = key.slice(2, -2);
+				if (item[key] !== undefined) {
+					return key;
+				}
+			}
+			return key;
+		};
 		return {
 			set: (item: IDataObject, key: string, value: IDataObject) => {
-				item[key] = value;
+				item[sanitazeKey(item, key)] = value;
 			},
 			get: (item: IDataObject, key: string) => {
-				return item[key];
+				return item[sanitazeKey(item, key)];
 			},
 			unset: (item: IDataObject, key: string) => {
-				delete item[key];
+				delete item[sanitazeKey(item, key)];
 			},
 		};
 	}