Equivalent syntax of PL/SQL using array in PL/pgSQL

Hi all,

I am using PostgreSQL 9.1 and get a syntax error with the following PL/pgSQL clause.
Is there any equivalent syntax in PL/pgSQL to solve it.

------
rec typ[];
(typ[1]).t1 := 1;
------

typ is type which was created by command below.

Create type typ as(
t1 interger,
t2 text);

I am migrating data from Oracle to PostgreSQL and encounter this issue.

Thanks,
Huong,