Error message when trying to connect to a web service

Question

Hi all,
I am trying to consume a third party web service using the
attached code and i get this big massive error about complex types:
[The following information is meant for the website developer
for debugging purposes.
Error Occurred While Processing Request
Complex object types cannot be converted to simple values.
The expression has requested a variable or an intermediate
expression result as a simple value, however, the result cannot be
converted to a simple value. Simple values are strings, numbers,
boolean values, and date/time values. Queries, arrays, and COM
objects are examples of complex values.
The most likely cause of the error is that you are trying to
use a complex value as a simple one. For example, you might be
trying to use a query variable in a <CFIF> tag. This was
possible in ColdFusion 2.0 but creates an error in later versions.
Has anyone encountered this before or what this may
mean....thanks
Code:

Answer 1

What kind of data is returned by your callcredit webservice?
Try performing a cfdump on "io".
Also, the cfinvoke/webservice method usually generates the
SOAP wrapper around your webservice arguments. You may want to try
just passing the XML expected by Job5314 (unless, of course, the
method is expecting a full SOAP message as a parameter).
i.e.
<cfsavecontent variable="strpost2">
<pwdchangerequest>
<oldpwd>oldpassword</oldpwd>
<newpwd>newpass</newpwd>
<confirmpwd>newpass</confirmpwd>
</pwdchangerequest>
</cfsavecontent>
<cfinvoke
webservice="
http://localhost/callcredit.wsdl"
method="Job5314"
returnvariable="io">
<cfinvokeargument name="io" value="#strpost2#"/>
</cfinvoke>
<cfdump var="#io#">