Passing array ( table ) in the where clause

I need to pass a table ( array ) in the where clause of the SQL select statement. Get an error. I can successfully pass a subscript not not the

whole array. Some what on these lines. /* code list */ Declare	Type
t_tst is table of varchar2(30)		   index by binary_integer;	 
 aaa t_tst ;	 sala number;

Begin
	aaa(1) := 'SMITH';
	aaa(2) := 'JONES';
	Select sal into sala from emp Where ename in aaa;

Help welcome.
RBS

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