SQL Server parameterized query does not go filter index

DROP TABLE t_test
CREATE TABLE t_test (
    ID INT IDENTITY PRIMARY key,status BIT
)
INSERT into T_test SELECT 0 Go
100000
INSERT to t_test SELECT 1
    
CREATE INDEX ixf_t_test_status on T_test (STATUS) WHERE Status=1
U Pdate STATISTICS t_test with fullscan
DBCC freeproccache-
-Normal query
SELECT * from T_test WHERE Status=1

--Parameterized query
sp_executesql n ' SELECT * from t_test WHERE status= @STATUS ', n ' @STATUS BIT ', 1

What makes me so sad?

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