Creating input masking for email with leading zero

Hi,

I want to be able to automatically generate an email upon my users keying in a 4-digit number (our store number). The store numbers come with 4-digits, including leading zeros (e.g 0123)

This is an example of a store email, if store number is 0123, the email would be 0123@store.7eleven.com.my

I want the user to key in 0123, then another read-only output text field generates 0123@store.7eleven.com.my

Currently, I am using conditional formatting to combine two fields; the store number field (e.g 0123) together with a hidden field of just @store.7eleven.com.my 

Because of the leading zero, I had to put a input mask, I could not get the masking for the output text field to put the '@' from emails as the @ is the mask for letters and it confuses the configuration.

Please advise

 Maybe it would work better if you would use Form calculations widget:

And here is the calculation I did:

That will work fine:

If you need further you could copy the value from that field to another one.

Here is my test form: https://form.jotformpro.com/71971974859983

Please check and let us know how it worked.

Thank you!

Perfect, thank you Nik!