I'm trying to add the oldWorkout object to the store so i can use what i push into it, but whatever I try, it doesn't add to the store, even if I start with the oldWorkout object directly in the state and just push the data into it there.

```
const initialState = {
    workoutlist: [],
}

const workoutList = (state = initialState, action) => {
    switch (action.type) {

        case 'LOAD_DATA':
            let oldWorkout = {};
            state.workoutlist.map((workout) => {
                if(workout.id === action.id){
                     return oldWorkout = Object.assign(workout);
                }
                return workout;
            });
            return state ={
                ...state,
                oldWorkout
            }

        default:
            return state;
    }
}

export default workoutList;

```