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# Don't understand why my solution is not correct

Hi! I know I can solve this challenge with if-else blocks but I wanted to solve it with unpacker method. I'm not sure where I was wrong. Any help would be appreciated :)

Write a function named time_machine that takes an integer and a string of "minutes", "hours", "days", or "years". This describes a timedelta. Return a datetime that is the timedelta's duration from the starter datetime.

time_machine.py
```import datetime

starter = datetime.datetime(2015, 10, 21, 16, 29)

# Remember, you can't set "years" on a timedelta!
# Consider a year to be 365 days.

## Example
# time_machine(5, "minutes") => datetime(2015, 10, 21, 16, 34)

def time_machine(duration, time_type):
if time_type == 'years':
return starter + datetime.timedelta(days = 365)
else:
return starter + datetime.timedelta(**{str(time_type) : duration})
```

Kenneth Love

I got what I've got wrong. I've written days = 365, but I should have written days = 365*duration. Forgot to multiply:)

Just so you know, Sena Sari, Kenneth is no longer with Treehouse.

What you're looking for is keyword unpacking which you can do with a dictionary.

```def time_machine(int1, str1):
time_dict = {str1: int1}

if str1 == "years":
time_dict = {"days": int1*365}

return starter + datetime.timedelta(**time_dict)
```

You can also just pass in a dictionary directly into the function as well, which would be really clean if we didn't have to worry about turning "years" into "days".

```def time_machine(int1, str1):

if str1 == "years":
str1 = "days"
int1 *= 365

return starter + datetime.timedelta(**{str1: int1})
```