You may want to upload your image to an image sharing website - your attachments aren't opening.
To chain report parameters, in your second parameter's query's WHERE clause, refer to @<first parameter's name>. If your first report parameter had a name of "YEAR", your second report parameter could have its "Available Values" setting set to "Get values from a query", and the data set query as:
SELECT SALES.SALEDATE
FROM SALES
WHERE DATEPART(SALES.SALEDATE) = @YEAR
If you selected 2015 as the "YEAR" parameter, the second parameter, hypothetical "Sales Date" would only show sales within 2015.