Hi @hissdev! Yes, this is entirely possible using the constraint column in the survey. Starting on line 88 in 1_0_statistical_identification of the attached, we assign the “today” date. Then in line 90 we constrain the date to be today (or earlier) (see constraint column and the messages that are displayed in display.constraint_message.text). You can use a similar syntax for any two sets of dates. quest1_00_0_ELMPS.xlsx (461.7 KB)