Problem with using parameter list

[mrCunningham]

Using the following code on my server.js gives me the error :

TypeError: SqlContext Error. Failed on step "__result__" with: "(val.val || []).map is not a function"

Code:

app.get('/api/accounts/:cpts', function (req, res, next) {
		var myCPT = req.params.cpts;
	sql.execute({
		query: sql.fromFile("./server/sql/AccountsByCPT"),
		params: {
			cptList: {
				val: myCPT,
				type: sql.VARCHAR,
				asList: true
			}
		}
	});
});