diff --git a/README.md b/README.md
index dcff29d..375d44d 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,8 @@ Loading and parsing data from a common file formats like: CSV, JSON, TSV either
  - [**pivot**](https://www.datapipe-js.com/docs/datapipe-js-array#pivot) (array, rowFields, columnField, dataField, aggFunction?, columnValues?) - Returns a reshaped (pivoted) array based on unique column values.
  - [**transpose**](https://www.datapipe-js.com/docs/datapipe-js-array#transpose) (array) - Transpose rows to columns in an array
  - [**sort**](https://www.datapipe-js.com/docs/datapipe-js-array#sort) ([fieldName(s)]) - Sort array of elements according to a field and direction specified. e.g. sort(array, 'name ASC', 'age DESC')
+ - [**flattenObject**](https://www.datapipe-js.com/docs/datapipe-js-array#flattenObject) (Object) - flattens complex nested object into simple object. e.g. flattenObject(obj)
+ - [**unflattenObject**](https://www.datapipe-js.com/docs/datapipe-js-array#unflattenObject) (Object) - unflattens simple object into complex nested object. e.g. unflattenObject(obj)
 
 ### Joining data arrays
 
diff --git a/src/array/transform.ts b/src/array/transform.ts
index 3bd946c..039e9f0 100644
--- a/src/array/transform.ts
+++ b/src/array/transform.ts
@@ -60,11 +60,6 @@ export function unflattenObject(data: any): any {
   function setProperty(data: any, pName: string, value: any): any {
     const pNames = pName.split('.')
     let parent: any = data
-    /** 
-    data['p1'] = {}
-    parent = data.p1
-    parent['p2'] = 123
-    */
 
     for (let i = 0; i < pNames.length - 1; i++) {
       if (pNames[i] in parent) {
diff --git a/src/data-pipe.ts b/src/data-pipe.ts
index b07a414..462a41c 100644
--- a/src/data-pipe.ts
+++ b/src/data-pipe.ts
@@ -309,7 +309,7 @@ export class DataPipe {
     return unflattenObject(this.data);
   }
 
-  flattern(): any {
+  flatten(): any {
     return flatten(this.data);
   }
 
diff --git a/src/tests/array.spec.ts b/src/tests/array.spec.ts
index 342951a..5f4dc5b 100644
--- a/src/tests/array.spec.ts
+++ b/src/tests/array.spec.ts
@@ -114,7 +114,7 @@ describe('Test array methods', () => {
     expect(groups.length).toBe(3);
   });
 
-  it('flattern', () => {
+  it('flatten', () => {
     const testArray = [1, 4, [2, [5, 5, [9, 7]], 11], 0, [], []];
     const flatten = pipeFuncs.flatten(testArray);
     expect(flatten.length).toBe(9);