how in form make verification of data in other report?

how in form make verification of data in other report?

hi!

there are 2 forms - form1 and form2
and there is report1 which made on entries of form1

how can i link in form2 verification report1's entries?

example
if in report1 there are entries with "input.datadostavki  >=  zoho.currentdate.addDay(3)"
then in form2 there is alert

===========

if (input.datadostavki  >=  zoho.currentdate.addDay(3))
{
    alert("alert");
}