Query question

I have a query like below:

select *
from table1
where field1 in( $P{subselect} )

I'd like to pass in the $P{} a select field2 from table2, but it's not 
working.  I'm guessing that it's putting in "select field2 from table2" 
with the quotes and it's failing.

Is there a way to pass in a string that won't be quoted?

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