Element at position 2 cannot be found

Question

I have been beating my brains out trying to figure this out. If any of you have thoughts, I would love to hear them. I have a cflocation to redirect to PayPal as follows...
<cflocation url="https://www.paypal.com/cgi-bin/websrc?tax_cart=#WA_eCart_FormatNumber(WA_eCart_GetTax(whit cart), false, 2)#&no_note=0&no_shipping=1&return=http://xxxxxxxx.com/paypalsuccess.cfm&cmd=_cart&upload=1&currency_code=USD&address_overrid e=0&firstname=#IIf(isDefined('session.firstname'),'session.firstname',DE(''))#&lastname=#I If(isDefined('session.lastname'),'session.lastname',DE(''))#&street1=#IIf(isDefined('sessi on.street1'),'session.street1',DE(''))#&street2=#IIf(isDefined('session.street2'),'session .street2',DE(''))#&city=#IIf(isDefined('session.city'),'session.city',DE(''))#&state_provi nce=#IIf(isDefined('session.state_province'),'session.state_province',DE(''))#&postcode=#I If(isDefined('session.postcode'),'session.postcode',DE(''))#&country=#IIf(isDefined('sessi on.country'),'session.country',DE(''))#&email=#IIf(isDefined('session.email'),'session.ema il',DE(''))#&phone=#IIf(isDefined('session.phone'),'session.phone',DE(''))#&ordernumber=#I If(isDefined('session.ordernumber'),'session.ordernumber',DE(''))#&handling_cart=#WA_eCart _FormatNumber(WA_eCart_GetShipping(whitcart)+WA_eCart_GetCharges(whitcart), false, 2)#&
<cfoutput>
    <CFLOOP FROM='1' TO='#ArrayLen(session.whitcart_items)#' INDEX='i'>
        <CFLOOP COLLECTION='#session.whitcart_items[i]#' ITEM='y'>
            <CFIF StructKeyExists(session.whitcart_items[i], y)>
                #y#=#session.whitcart_items[i][y]#&
            </CFIF>
        </CFLOOP>
    </CFLOOP>
</cfoutput>
[email protected]" />
When I run this, it comes back with element at position 2 cannot be found. The probem is that my array only has one item in it. I dumped it to the screen and see this...
Price=0.01 TotalPrice=0.01 Name=The_Day_After_His_Birth.pdf Weight=0 Description=The Day After His Birth FullDetails=1 The_Day_After_His_Birth.pdf (2) ID=2 TotalWeight=0 Quantity=1
So I am struggling as to what is occurring.
Thoughts?

Answer 1

Dan Bracuk wrote:
So in other words, it's a 1D array.  That means this line will never work:
#y#=#session.whitcart_items[i][y]#
Well it should work as long as 'i' is an integer in the set of {1} and 'y' is a string in the set of {'Description','FullDetails','ID',etc}
I.E this hard coded example should work.
<cfoutput>Description = #session.whitcart_items[1]["Description"]#</cfoutput>
Thus, this should also work.
<cfset i = 1>
<cfset y = "Description">
<cfoutput>#y# = #session.whitchat_items[i][y]</cfoutput>