I would like to add restriction on the field… which language that KOBO used on writing code ? and how can i add basemap for the Form thanks

You could use the regex code to make a constraint as discussed in the post discussed previously: [image] How can I make a limit to the 'integer' data type (e.g. 01 to 99)? Form Building Hi @tanzilhuda , Backing up with what @bernieseville have said you could do the same a…