How to count up an index when using repeat function in XLSForms

[SnezanaEckl]

Dear Esri Community,

Is it possible to display the index of the repeat function in a Survey. I only found sum or count function, but it provides only the total number of the answers. 

The goal is to create a survey with several answers and each answer should get the index of it, e.g. like this:

This is done by count() function. But when you refresh the first entry, it gets, as expected, also the number 2, because it has two answers, but instead we want the ID T01 here:

Please see also the attached form.

Thank you for your ideas!

[DougBrowning · Accepted solution]

There is a new one still in beta.  If you have at least 3.12 you can use position(..) or if you have multiple repeats position(${nameof repeat}).

If not 3.12 you make a field with a calc of 1 then go once(count(field))

Hope that helps

[SnezanaEckl]

Dear @DougBrowning , 

Thank you very much for your help! The position()-function works!

Unfortunately that function is not mentioned in the German documentation yet. But I found it now in the English documentation.

Best regards,

Snezana