On "Region Definition", there's its "Source" item. In there, you'll find something like
quality="high" width="#WIDTH#" height="&P81_REGION_HEIGHT." name="#CHART_NAME#"
I set its height to a value contained in P81_REGION_HEIGHT item. Note the way I did that: ampersand (&) followed by item name followed by a dot (.), all enclosed within double quotes. So, once again:
Does it do any good?
Right, you don't have it. That's because you use 4.2, not 4.1 (as your topic title suggests).
Have a look at https://forums.oracle.com/thread/2437703?start=0&tstart=0 where Hilary Farrell explains how to do that using dynamic action.
$('#R11046104351951900_chart > object', apex.gPageContext$).attr('width',$v('P18_GRAPH1_WIDTH'));
Is there a list of this options for changing charts setup?
I need to change chart type also regarding of value in item, for example to set up 2D line even there is 3D column in property of chart.