F5 APM AAA ldap authetication configuration

I am trying to configure ldap authentication in APM using ldap AAA server.

User authentication doesn't work.. When I did capture I found error "Bad search Filter"

So I added following in ldap authentication

APMPolicy-> ldap Auth->search filter

(uid=%{session.logon.last.username})

(userPassword=%{session.logon.last.password})

do I need to have search filter?