MyVD query with boolean attributes in DB

[moekku]

How can I query a boolean attribute via MyVD when using DB insert (for Postgres)?

Basically I would like to make following kind of LDAP query (&(uid=xyz*)(userstatus=t)) to MyVD.
The problem is MyVD handles all query attributes by default as strings and makes the SQL query for userstatus field with operator LIKE, causing postgres to give an error.

I could not find answer in the documentation.