Number of rows that can be selected using cascade select

[Kal_Lam]

If you have a long list a choices, it’s always good to use the external files. This should help you improve the performance of your data entry form.

Maybe the post discussed previously (which uses select_one_from_file) should help you solve your query:

Select_one choice filter from another select_one

Hi @esmatullaharifi, Welcome to the community! You could design your survey form with the cascading select question to get what you have tried for by following the support article here. As a backup you could also have a look at the post that has a simple workaround that should help you understand the concept of cascading select question: But looking at your xlsform, i see there are more then 800 choices which should affect your data entry performance. Thus a solution for this could be design…