Help about Trigger, user defined variables, Error Code : 1064.

Hello everybody,
I am newbe about databases and I am starting with mysql.
I have a trouble with trigger: I wrote a working trigger which II would
like to make more general using user defined variables in the trigger.

The working trigger is:

DELIMITER $$;

CREATE TRIGGER `db_LabELT`.`ins_synch_status_prefix ` AFTER INSERT on
`db_LabELT`.`anagrafica`
FOR EACH ROW BEGIN

Insert INTO componentsliststatus SET IdComponente = NEW.IdComponente;
Update componentsliststatus SET Anagrafica='1' where IdComponente =
NEW.IdComponente;
Update componentsliststatus SET AnalisiVisiva='0' where IdComponente =
NEW.IdComponente;
Update componentsliststatus SET AnalisiStrumentale='0' where
IdComponente = NEW.IdComponente;
Insert INTO instrumentalanalysis_EGR SET IdComponente =
NEW.IdComponente;
Insert INTO visualanalysis_EGR SET IdComponente = NEW.IdComponente;
END$$

DELIMITER ;$$

I would like to stress than for an unknow reason if I set several field
in the same line, I get error. So I had to workaround using several
update statement (sigh ... !!!!)

I need to make more have the tables name in the latest two insert more
general, e.g. visualanalysis_EGR, visualanalysis_GCU,
visualanalysis_GLO, etc

so I added the @va user variable to describe the table's name:

DELIMITER $$;

CREATE TRIGGER `db_LabELT`.`ins_synch_status_prefix ` AFTER INSERT on
`db_LabELT`.`anagrafica`
FOR EACH ROW BEGIN

SET @VA := CONCAT('visualanalysis_',substr(NEW.IdComponente,1 ,3));

Insert INTO componentsliststatus SET IdComponente = NEW.IdComponente;
Update componentsliststatus SET Anagrafica='1' where IdComponente =
NEW.IdComponente;
Update componentsliststatus SET AnalisiVisiva='0' where IdComponente =
NEW.IdComponente;
Update componentsliststatus SET AnalisiStrumentale='0' where
IdComponente = NEW.IdComponente;
Insert INTO instrumentalanalysis_EGR SET IdComponente =
NEW.IdComponente;
Insert INTO @VA SET IdComponente = NEW.IdComponente;
END$$

DELIMITER ;$$

I get the following error message:

(0 row(s) affected)
(0 ms taken)

Error Code : 1064
You have an error in your SQL syntax; check the manual that corresponds
to your MySQL server version for the right syntax to use near '@VA SET
IdComponente = NEW.IdComponente;
END' at line 9
(0 ms taken)

Could pls someone help me, at least the right direction to solve this
issue.

Many thanks,

MassimoM