Piotr's followup:

But I don't realised that I can't open the related file twice. When I open file with first command "relate", the same file couldn't be opened in the next part of form. Am I right?

You have to experiment a bit. Actually I am not sure, what I scheduled was a principle. If one cannot have the same relate more than once, just save the fieldname after entry and perform relate in a third field:

Principle: v1 set variable to "v1" and jump to v30 v2 set variable to "v2" and jump to v30 v3 ,,,,,....... etc

v30 perform relate here

regards Jens M. Lauritsen, Consultant,MD. PhD. The EpiData Association, (EpiData Foreningen) Enghavevej 34, DK5230 Odense M. Denmark e-mail: info@epidata.dk For E-mail news on EpiData: Http://www.epidata.dk/php/maillist.php EpiData is freeware