THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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If you use Freemarker the better way to prepare your data is to call one or more Grrovy scripts. You call them in the action part of the screen. Inside you prepare and set your data in a context variable. There are plenty of examples available OOTB.
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To continue on screen and form widget, see OFBiz Tutorial - A Beginners Development Guide |