XPATH error during Security Test(SQL Injection)

Hello,

I'm relatively new to SOAP UI. I'm using the security testing feature of SOAPUI 4.0.1. In The SQL Injection test, I'm trying to specify the XPATH for a parameters. I used declare namespaces. However during the test run I get the following error:

ERROR: An error occured [net.sf.szon.trans.XPATHException: XPath syntax error at char 0 in {delcare namespace soapevn}: Unexpected token "delcare namespace" in path expression].

Thanks,
Carlos