How to create new attribute in session in Search Restriction in Flexible Search?

[former_member1374253]

Optional parameter is present(catalogVersions,user) in session in Search Restriction .

(?session.brand) is null or (?session.brand) = {brand}

It throws Restrictions throws error in this case. It expects the "brand" attribute in session.

Any idea will be appreciated. Thanks in advance.

[Former Member]

We had a similar issue and ended up with creating a new Filter which sets up empty value for our session attribute. And then in search restriction we include checking for empty values (AND ?session.ourCustomAttribute <> '' )