Federated tables and triggers

This is the scenario. Have two MySQL servers (S1, S2) on different machines, with a database on each (DB1, DB2). I have a table (T2) on DB2 that needs to "fetch" rows from another table (T1) on DB1. I have created a temporary table (base on DB1 and federated on DB2), so when I insert a row on T1 which complies with some requirements I copy to my DB1 temporary table. That's OK. With the federated table on DB2 I get the row I need for T2. I presumed that with a trigger on the federated temporary table of DB2 it's possible to insert that row to T2, but the trigger never fires. Any suggestions?