You could use a number user field, and check if the number is between 100000000 and 999999999.

This will work if the numbers never start with 0.

If the numbers can start with 0, then you need to use a text user field and external validation.

You can use tools like Make.com to validate the length.

Thank you for your attention, dear Gustavo.

“You could use a number user field, and check if the number is between 100000000 and 999999999”

What method can I use to give these requirements?

Hey @Arman Shayan you need to use the condition block in your Manychat flow:

https://help.manychat.com/hc/en-us/articles/14281142518556-Condition-Block

Okay, I tried, but it didn't work. Can you explain in detail what section I can find this? I'm doing this for a Telegram bot.

I can't find the place where I can set these digits.

You won’t set the digits, you’ll need to check with a condition that the number is higher than 100000000 and lower than 999999999. If this is true, then we know the number has 9 digits.

And how can I set these conditions?

Hi, @Arman Shayan!

You can build something like this:

1. You will ask the user for the 9 digit number and store it into a Custom User Field (TEST_NUM_FIELD in my example)
2. As @Gustavo Boregio said, a Condition checking if the Custom Field (TEST_NUM_FIELD) is greater than or equal to 100000000 and less than or equal to 999999999.
3. If the number has more or less than 9 digits, it goes back and asks again for a number
4. If the number has 9 digits, it will continue your flow.

• To create the Custom User Field go to Settings/ Fields/ User Fields (remember to create it as Number type )

Hope it helps!

Thank you, dear Fabio and dear Gustavo everything worked