Thank you for your post.
SQL Monitor uses a SQL Server table valued function called sys.dm_exec_sql_text (based upon a sql_handle found using the view sys.dm_exec_query_stats) to gather information about queries which are run. These are used in a number of places including the long-running query alert.
The tool uses a complex query to get this information, and unfortunately neither of these hold the parameters specified when running stored procedures. To the best of my knowledge there is no way to retrospectively find these out either.
I'm sorry that I don't have a better answer for you. But feel free to add any additional questions.