Hi Eva,

Can you give us some additional information here? When you're doing lookups, what are the two tables/queries you're trying to do lookups from and to?

For example, are you working with a list that is doing a lookup to another list? Or is it a dataset that is looking up to another list? Or is it a dataset to another dataset? A sample set to an assay data table?

Also, is your lookup working with an integer or a string?

The closer I can reproduce your conditions, the better we can figure out what is broken. I know that the lookup validators do work, but it's possible that they might not work in every type of scenario.

Regards,

Jon