Conditional Queries - A Syntax Error?

Hi!

I think this is propably an easy thing to do, but nevertheless I have not been able to make it work in MS Access...

(Let's say) I have a table with information about people. Sometimes I need to get a subgroup of the table_people, like a group with a certain age, or who live in a certain area, or who like certain things. And sometimes a need to work with the whole table.

To be able to do this basic filtering I have a form with check boxes, like "check this if you want to filter by a persons hobby" and appropriate fields where to choose a hobby from a list. My problem is: how do I add this "condition" to my query? I've tried eg. using "Like" as a filtering tool and IIF() to add the condition, but this doesn't work (in the criteria row):

Like (IIF( Forms![basic]![Filter_by_hobby] , "[Forms]![basic]![Hobby_from_list]", "*"))

So the idea is that if the box is checked, the condition is true and the first text is chosen, and if no filtering by hobby is required, all people are chosen regardless of their hobbies (Like "*")
How to fix this - is there a syntax error or a profound mistake in my thinking - or how to do the same more elegantly?

Thanks in advance,
garcanrya