Composite Foreign Key Constraint via PhpMyAdmin?

Is there a way to add a composite (multi-column) foreign key to an InnoDB table via the PhpMyAdmin interface? I already have the appropriate composite primary key in the target table, and I can single column foreign key constraints, but I can't find a way in the interface to do the composite one.

Table Log
- Date
- Service
PRIMARY KEY (Date,Service)

Table Issue
- Issue_Id
- Log_Date
- Log_Service
PRIMARY KEY Issue_Id
FOREIGN KEY (Log_Date=Log.Date,Log_Service=Log.Service)

Everything is already set up except the foreign key; I go into the PhpMyAdmin relation view and I can only see how to set up a FK against Log.Date and not against Log.Service at all.