[amibroker] OBV and 30 day moving average

["jmbruegge" <jmbruegge@xxxxxxxxx>]

I am trying to add a 30 day moving average to the built in OBV (On 
Balance Volume) formula, but because it is a built in indicator, it 
is not accepting my line for the 30 day MA : 

Plot (MA(OBV(), 30), "MA30", colorbrightgreen, 1); 

Any ideas on how to write the OBV formula with a 30 day MA ?

I am lost ???

Thanks to all help -

JMB



------------------------ Yahoo! Groups Sponsor --------------------~--> 
Make a clean sweep of pop-up ads. Yahoo! Companion Toolbar.
Now with Pop-Up Blocker. Get it for free!
http://us.click.yahoo.com/L5YrjA/eSIIAA/yQLSAA/GHeqlB/TM
--------------------------------------------------------------------~-> 

Check AmiBroker web page at:
http://www.amibroker.com/

Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
     http://groups.yahoo.com/group/amibroker/

<*> To unsubscribe from this group, send an email to:
     amibroker-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
     http://docs.yahoo.com/info/terms/