How to define a public variable in webDynpro ?

Dear All,
    I want use a variable between 2 methods.but don't know how to do , There are my part Error code ,
public class TestHtml
public String mystr1 = "";
public void wdDoInit()
    mystr1 = "0123";
public void onActionExportIE(com.sap.tc.webdynpro.progmodel.api.IWDCustomEvent wdEvent )
    String mystr2 = mystr1 + "b";
when I click save button ,
"public String mystr1 = ""; disappear .
can you help me ?
thanks!

Hi Doke,
The best way to declare public/private variable is to declare it on global area
Declare it at the end of view where you can see this begin and end part
Inside (As shown below) it will treated as golobal variable, which can reuseable
Anywhere within your iview.
//@@begin others
public String mystr1 = "";
//@@end
It will solve your problem.
Thanks
Anup

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Message was edited by:
netsonicc

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Hi Flex harUI ,
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