adding join conditions with DB_DataObject

I'm currently struggling to achive this query with DB_DataObject: SELECT raduser.* , radreply.Value as ip FROM raduser LEFT JOIN radreply AS radreply ON radreply.UserName=raduser.username AND Attribute = "Framed-IP-Address" WHERE raduser.customerId LIKE "%MAS02%"; Notice multiple join contitions. DB_DataObject::debugLevel(2); $do =& DB_DataObject::factory('raduser'); $do1 =& DB_DataObject::factory('radreply'); $do->joinAdd($do1, "LEFT", 'radreply', 'radreply.UserName=raduser.username AND Attribute = "Framed-IP-Address"'); Results in : dataobjects_raduser: ERROR: joinAdd: You cannot target a join column in the 'link from' table (radreply). Either remove the fourth argument to joinAdd() (radreply.UserName=raduser.username AND Attribute = "Framed-IP-Address"), or alter your links.ini file. Nice to see an imrovement in the linking error messages there btw ;) Useful error, and I nnderstand it, but i'm not trying to join here on a table1.column = table2.column style. Can anyone suggest a way I can achive this? Kind Regards. -- Ian P. Christian http://pookey.co.uk