Birt Global Integer

Posted by matschie on Stack Overflow See other posts from Stack Overflow or by matschie
Published on 2010-05-31T09:35:37Z Indexed on 2010/05/31 9:43 UTC
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reports

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global-variables

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birt

Hi there I have a Birt Report which read some stuff from a database. After that i want to increment a global Integer for every Detailrow that is loaded. So far i have initialized a global Integer with the following lines:

importPackage(Packages.java.lang);
reportContext.setPersistentGlobalVariable("minTotalPlus", new Integer(0));

After that i added the following line into a field in my detail row:

reportContext.setGlobalVariable("minTotalPlus",  new Integer reportContext.getGlobalVariable("minTotalPlus")) + 1);

When i preview the report i get an "java.lang.NumberFormatException: null" which means that the global variable is null. Why is that so? How could I fix that?

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