# Learn String Manipulation by Building a Cipher - Step 69

### Tell us what’s happening:

Describe your issue in detail here.

i have koment the last 2 lines then it wont let me pass
i muss as a third parameter call direction tou my function defenition
woth i know ist mei function oher ist:
def vigenere
other the last encryption
i do not understand it i have to do precisely
i will wait for a tip

``````
# User Editable Region

text = 'Hello Zaira'
custom_key = 'python'

def vigenere(message, key,):
key_index = 0
alphabet = 'abcdefghijklmnopqrstuvwxyz'
encrypted_text = ''

for char in message.lower():

# Append space to the message
if char == ' ':
encrypted_text += char
else:
# Find the right key character to encode
key_char = key[key_index % len(key)]
key_index += 1

# Define the offset and the encrypted letter
offset = alphabet.index(key_char)
index = alphabet.find(char)
new_index = (index + offset) % len(alphabet)
encrypted_text += alphabet[new_index]

return encrypted_text
#
encryption = vigenere(text, custom_key)
#
print(encryption)

# User Editable Region

``````

User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36`

### Challenge Information:

Learn String Manipulation by Building a Cipher - Step 69

You appear to have created this post without editing the template. Please edit your post to Tell us what’s happening in your own words.
Learning to describe problems is hard, but it is an important part of learning how to code.
Also, the more you say, the more we can help!

Hello @remuschilom1489,
You have to add `direction` as the third parameter.

Instead of using comment above please use it in front of them!

Happy Coding

1 Like

i have done this it wont work
#encryption
#print
def vigenere und stil it’s not working