SQL Editor

I am attempting to use CREATE TRIGGER in the SQL Editor according to OE Data Management SQL Development doc. the following code will not run. It returns a syntax error in SQL statement at or about END (10713). 

Does anyone have any ideas?

CREATE TRIGGER Pub.nitroasl_mailer_trigger
BEFORE
INSERT ON Pub.nitroasl_mailer REFERENCING NEWROW FOR EACH ROW
IMPORT
import java.sql.* ;
BEGIN
Long current_id = (Long)NEWROW.getValue(1, BIGINT);
if (current_id <= 1) {
SQLCursor next_id_query = new SQLCursor("SELECT TOP 1 Pub.nitroasl_mailer_seq.NEXTVAL FROM SYSPROGRESS.SYSCALCTABLE");
next_id_query.open();
next_id_query.fetch();
Long next_id = (Long)next_id_query.getValue(1,BIGINT);
next_id_query.close();
NEWROW.setValue(1, next_id);
}
END