Data entry mask with double entry via ODK

Hi all,

Please can you give me an idea about creating data entry mask, with double entry using ODK ?

Thank you for your support

Hi @szannou

could you elaborate and provide a sample?

When you say "data entry mask" do you mean like using a regrex (regular expression) to control the possible input?
See: https://docs.opendatakit.org/form-regex/