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<?xml-stylesheet type="text/xsl" href="https://www.infopathdev.com:443/utility/FeedStylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Web Services</title><link>https://www.infopathdev.com:443/forums/48.aspx</link><description> </description><dc:language>en</dc:language><generator>CommunityServer 2007 SP3 (Build: 31118.962)</generator><item><title>Unsupported Expression Error</title><link>https://www.infopathdev.com:443/forums/thread/89816.aspx</link><pubDate>Thu, 16 May 2013 08:35:10 GMT</pubDate><guid isPermaLink="false">033a2e2d-04e2-4a9d-be01-a4634161eefd:89816</guid><dc:creator>jacqui1811</dc:creator><slash:comments>0</slash:comments><comments>https://www.infopathdev.com:443/forums/thread/89816.aspx</comments><wfw:commentRss>https://www.infopathdev.com:443/forums/commentrss.aspx?SectionID=48&amp;PostID=89816</wfw:commentRss><description>Hi,
I have developed an infopath form and a webservice but when I try to hook up the form to teh service I get &amp;#39;The following expression could not be parsed because of a syntax error or because it uses an undefined prefix or unsupported function: /dfs:myFields/dfs:dataFields/tns:VendorTableInsert/s1:vendorsForm.
I have done a bit of searching and found http://blogs.microsoft.co.il/blogs/adlaim/archive/2009/01/29/the-following-expression-could-not-be-parsed-because-of-a-syntax-error-or-because-it-uses-an-undefined-namespace-prefix-or-unsupported.aspx 
Which says to recreate the data connection with the  “my” namespace and that will work.
However when I try and recreate the dataconnection I don&amp;#39;t seem to be able to change the namespace on the right from s1:vendorsForm to my:vendorsForm.
Can somebody tell me where I might manage to do that please, or have I got the wrong end of the stick here.
I have attached an image to help you see where I mean.
Thanks.
Jacqui.</description></item></channel></rss>