Roku: roUrlTransfer with dynamic url return empty

Question

I am building a channel that call two xml files, the first one contain the links for the contents that will be shown in every row, the first call it work fine because i am using a static url

url = CreateObject("roUrlTransfer")
url.SetUrl("http://theRowsContents.xml")
rsp = url.GetToString()

responseXML = ParseXML(rsp)
responseXML = responseXML.GetChildElements()
'responseArray = responseXML.GetChildElements()

result = []

for each xmlItem in responseXML      
    item = {}
    item.TITLE = xmlItem.getAttributes().title
    item.ContentList = GetApiArray(xmlItem.getAttributes().feed)
    result.push(item)
end for

but when i pass the second url to fetch the contents it wont work

Function GetApiArray(url as String)
    newXfer = CreateObject("roUrlTransfer")
    newXfer.SetUrl(url)
    response = newXfe.GetToString()

    responseXML = ParseXML(response)
    responseXML = responseXML.GetChildElements()
    responseArray = responseXML.GetChildElements()

and this is the log

> Suspending threads... Thread selected:  0*   pkg:/source/main.brs(112)
> responseXML = responseXML.GetChildElements()
> 
> Current Function: 106:  Function GetApiArray(url as String) 107:     
> newXfer = CreateObject("roUrlTransfer") 108:      newXfer.SetUrl(url)
> 109:      response = newXfer.GetToString() 110:   111:     
> responseXML = ParseXML(response) 112:*     responseXML =
> responseXML.GetChildElements() 113:      responseArray =
> responseXML.GetChildElements() 114:   115:      result = [] 116:  
> 'Dot' Operator attempted with invalid BrightScript Component or
> interface reference. (runtime error &hec) in pkg:/source/main.brs(112)
> 112:     responseXML = responseXML.GetChildElements() Backtrace:
> #2  Function getapiarray(url As String) As Dynamic    file/line: pkg:/source/main.brs(112)
> #1  Function makerequest() As Dynamic    file/line: pkg:/source/main.brs(54)
> #0  Function runuserinterface() As Void    file/line: pkg:/source/main.brs(15) Local Variables: url              roString
> (2.1 was String) refcnt=2 val:"https://contentsFeed.xml" global       
> Interface:ifGlobal m                roAssociativeArray refcnt=4
> count:1 newxfer          roUrlTransfer refcnt=1 response        
> roString (2.1 was String) refcnt=1 val:"" responsexml      Invalid
> responsearray    <uninitialized> result       <uninitialized> xmlitem 
> <uninitialized> itemaa           <uninitialized> item            
> <uninitialized> Threads: ID    Location                               
> Source Code  0*   pkg:/source/main.brs(112)               responseXML
> = responseXML.GetChildElements()   *selected
> 
> Brightscript Debugger>

so what i am doing wrong ?

Answer 1

You have a typo on line 109 ;)

You are using newXfe instead of newXfer.

See the error:

'Dot' Operator attempted with invalid BrightScript Component or interface reference. (runtime error &hec) in pkg:/source/main.brs(109)

That's because newXfe is uninitialized (obviously).