Click() fails on a button accessed through getAccessibleChild()

Hi,



I am evaluating TestComplete 7.51, and am writing a JScript that will install my application using InstallShield. I want to run the InstallShield and then click on the "Next" button.

Our build server builds the application in a different folder (according to date) every day, so I don't think that I can add the InstallShield to the TestedApps. In my test, I start InstallShield using the windows explorer and get the InstallShield window with

     javaw = Sys.WaitProcess("javaw", 600000);



In the InstallShield main window there is a panel with 3 buttons "Cancel" "Previous" and "Next". I get the panel using 

 

    PropArray = new Array("JavaClassName", "Visible");

    ValuesArray = new Array("ZeroGf9", true);

 

    ConvertedPropArray = ConvertJScriptArray(PropArray);

    ConvertedValuesArray = ConvertJScriptArray(ValuesArray);

    mainpanel = javaw.FindChild(ConvertedPropArray, ConvertedValuesArray, 8);



Then I find the "Next" button thus:



    childno = mainpanel.getAccessibleChildrenCount;

    for ( i = 0 ; i < childno ; i ++ )

    { 

        nextbtn1 = mainpanel.getAccessibleChild( i ) ;

        if ( nextbtn1.text.equals("Next") )

            break;

    }



Then I want to click the "Next" button, so I do:



    nextbtn1.Click();



but this gives me a Microsoft JScript runtime error: Object doesn't support this property or method



I don't understand why.



If instead I access the "Next" button through Aliases for a particular instance of InstallShield, like this:

Aliases.javaw.frame0.RootPane.null_layeredPane.null_contentPane.ZeroGge.ZeroGf9.ZeroGgb1.Click();



then I can use it. But I don't think that I can use Aliases with an application which is not in the TestedApps and in any case the button names are created dynamically, so they are different every time.



What am I doing wrong?



Best Regards



Tina