**eiermann**Hi there,

I just looked at the article of input masking but I couldn't find a way to do the following:

I need a field for phone numbers. But phone numbers are not all the same length.

I wanted to force a plus at the beginning but not force a certain length for the number.

How can I do that? For example it should be possible to have:1. +62817971033

2. +491797558367

3. +81553886997155

As you can see each number has a different length. What can I do to make this work with the input mask?

Cheers,

Chris

- JotForm Support
**BJoanna**You can achieve that by adding plus sign in front of mask inputs inside of Mask Value option. And if you do not want to force a certain length for the number uncheck Fill Mask Validation option.

Here is my cloned form: https://www.jotformpro.com/form/63104435722953

Feel free to test it and clone it.

Hope this will help. Let us know if you need further assistance.