Checkboxes and booleans work like all other column datatypes, but they differ on 1 special use case:

You actually need 3 options per checkbox, but you only have 2 (true or false / on or off).

I would create a static entity where you can map the 2 boolean-values (true and false) and add another: (ALL). And then make your aggregate select those.

i am assuming you already know how to filter your aggregate in a form with filter.

First create one attribue in name as "Status" and data type is "Boolen". Then create a check box in Required screen. For result showing screen aggregate add one filter like (That status attribute = true)

Hi Ahmad,

If i underderstand correctly, you have a boolean for each possible status value ?

So your filter would look something like this

ShowConcept and SomeEntity.Status = Entities.Status.Concept
or
ShowActive and SomeEntity.Status = Entities.Status.Active
or
ShowCancelled and SomeEntity.Status = Entities.Status.Cancelled
or 
not (ShowConcept or ShowActive or ShowCancelled) //if none selected, show all

Dorine