Default timeframe in graphs - 1.4.4

[tore]

I'm using Zabbix 1.4.4, I'm trying to define graphs to monitor various values. The default time frame of 1h is not very useful to us, so I've changed the default in include/defines.inc.php to define('ZBX_PERIOD_DEFAULT', 12*3600); for a 12h time frame. This seems to work when I view graphs from Monitoring - Latest values - (some value) - graph, but when I try to define a graph with Configuration - Graphs - New graph I still get a time frame of 1h.
What I need to accomplish is to have screens with graphs with a default value of 12h. How can I do this?

Regards
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Tore W. Hermansen

[tore]

Oooops, seems I was a bit hasty in posting. When I put a graph in a screen and viewed the screen from "Monitoring" the graph was drawn with a 12h time frame.
Sorry for my mistake, but the whole thing confused me a bit.

*blush* Regards *blush*
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Tore W. Hermansen