axis webservice params issue

i created a sample webservice by idea 12.1.4, i modify the webservice, for example

old:
     String sayHelloWorldFrom( String from)

new:
     String sayHelloWorldFrom( String p1, String p2)

then generate a new wsdl, i set a breakpoint , debugging with tomcat


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i use soapUI to test the webservice, but the second param shows null

i create a webservice cilent project with idea (apache axis mode), but when it run, the breakpoint hit, the second param p2 shows null yet

i create a php page, use nusoap to call this webservice, the second param show null yet............



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can any one help me to solve this problem?