Unable to execute trigger sql or execute multiple queries at once

[minlau]

I need an ability to execute multiple queries and pretty much any other queries(like create table, trigger and etc.) what I assume is not rare use case.

1. Executing create trigger sql

   create trigger biu_parts for parts
   before insert or update
   as
   begin
   if (inserting and new.id is null)
   then new.id = gen_id(gen_partrec_id, 1);
   new.partname_upper = upper(new.partname);
   end

   returns error: "Metadata update statement is not allowed by the current database SQL dialect 1". I believe(99% sure) Upscene Database Workbench executes it with Dialect 1 without any problem.

2. Adding TERM(various versions) to sql:

   SET TERM ^ ;
   [MY SQL]
   ^

   returns error: Token unknown - line 1, column 5 TERM Upscene Database Workbench executes it with Dialect 1 without any problem.

3. Adding execute block to sql:

   execute block as begin
   select first 1 * from some_table;
   select first 1 * from some_table;
   end

   returns error: Token unknown - line 1, column 33 ; Did not try in Upscene Database Workbench.

From my personal experience some things in Firebird are more complicated compares to mysql/postgresql. Is this expected behavior? Or something is it just not implemented?