MACROMEDIA COLDFUSION MX 61-CFML Reference page 391

Throws
If an array element is other than a simple element, this function throws an
ArraySortSimpleValueException error. If
numeric, this function throws a ValueNotNumeric error.
Example
<!--- This example shows ArraySort --->
<cfquery name = "GetEmployeeNames" datasource = "cfsnippets">
SELECT FirstName, LastName FROM Employees
</cfquery>
<!--- create an array --->
<cfset myArray = ArrayNew(1)>
<!--- loop through the query and append these names successively to the last
element --->
<cfloop query = "GetEmployeeNames">
<cfset temp = ArrayAppend(myArray, "#FirstName# #LastName#")>
</cfloop>
<!--- show the resulting array as a list --->
<cfset myList = ArrayToList(myArray, ",")>
<!--- sort that array descending alphabetically --->
<cfset isSuccessful = ArraySort(myArray, "textnocase", "desc")>
...
is numeric and an array element is not
sort_type
ArraySort 391