how to set value of a text control in master page during runtime in BIRT 232

yamanko

hi, guys, does anyone implement dynamically change a text control's value while this text control is contained in masterpage. i know i can do that by following way:
adding code like below in method initialize() of report
reportContext.getReportRunnable().designHandle.getDesignHandle().findElement("TextControlNameinMasterpage").setContent("helloworld");

but this is not what i want, i need to change the control's value in runtime, in dataItem's onPageBreak and this dataItem is in report's body. i added same code in this DataItem's onPageBreak() method, but unfortunately fails.
do you have any suggestion or advice, thanks

yamanko

i write the control's content into a file and following are my code added into DataItem's onPageBreak()
var fstream = Packages.java.io.FileWriter("c:/test.txt",true);
var out = Packages.java.io.BufferedWriter(fstream);
out.write(reportContext.getReportRunnable().designHandle.getDesignHandle().findElement("TextControlNameinMasterPage").getContent());
reportContext.getReportRunnable().designHandle.getDesignHandle().findElement("column1").setContent("helloaaaaaaw");
out.write("rn");
out.write(reportContext.getReportRunnable().designHandle.getDesignHandle().findElement("TextControlNameinMasterPage").getContent());
out.write("rn");
out.close();

i checked the content in test.txt and found that the original value of control 'TextControlNameinMasterPage' is 'test' (which i set when designing), and the modified value is 'helloaaaaaaw' which means i set this value successfully. but control'value in the output PDF is still 'test'