Limit alpha-numeric entry to 10 characters

Support
1

I am designing a survey on ODK. In in one of the questions, the study ID, I expect the enumerators to enter a 10 digit entry, nothing more and nothing less (strictly 10 characters) . The answer I expect should be alphanumeric i.e KT010100001

Anyone with an idea what constraint should be used?

Thanks in advance

2

See https://opendatakit.org/help/form-design/binding/ for a list of
available functions.

string-length(.) = 10

ยทยทยท On Sat, Nov 29, 2014 at 2:54 AM, wrote:

I am designing a survey on ODK. In in one of the questions, the study ID,
I expect the enumerators to enter a 10 digit entry, nothing more and
nothing less (strictly 10 characters) . The answer I expect should be
alphanumeric i.e KT010100001

Anyone with an idea what constraint should be used?

Thanks in advance

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