Hi @oshinkavdia
You can write code like that
Declare @Query VARCHAR(8000)
Set @Query = 'SELECT * FROM tablename WHERE colum IN(' + @value1 + ', ' + @value2 + ')'
EXECUTE( @Query )
Assign it to a variable as the sql text.
Then in [Execute query] activity, set above variable to the input sql.
Notice: above sql can run correctly in SQLSERVER.