Is it possible to size a flash chart based on the amount of data returned?

My chart is based on a date range. If a user enters say a range of one year, I need the line chart to be rather large so show all the data points. Though if they select just a week, then the chart can be much smaller. I only see the hard coded values to set the size of the chart (Chart Width and Chart Height). Can those be changed on the fly based on the amount of data returned?
Using Application Express 3.1.2.00.02 and AnyChart 3.3
Thanks.
Chris

Hello Hillary,
I tried your suggestion, but still not working for me. I added hidden text field that wold hold the vaule of the width for the chart. Then I reference that field in the chart source. Is there some other property I need to change as well? Any more suggestions? Thanks.
Here is my source.
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
     codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0"
     width="&P86_NUM_ROWS."
     height="#HEIGHT#"
     id="#CHART_NAME#"
     align="">
<param name="movie" value="#IMAGE_PREFIX#flashchart/#CHART_TYPE#.swf?XMLFile=#HOST#apex_util.flash?p=&APP_ID.:86:&APP_SESSION.:FLOW_FLASH_CHART_R#REGION_ID#">
<param name="quality" value="high">
<param name="allowScriptAccess" value="sameDomain">
<param name="allowNetworking" value="all">
<param name="scale" value="noscale">
<param name="wmode" value="transparent">
<param name="FlashVars" value="waiting=#FLASH_WAITING#&loading=#FLASH_LOADING#">
<embed src="#IMAGE_PREFIX#flashchart/#CHART_TYPE#.swf?XMLFile=#HOST#apex_util.flash?p=&APP_ID.:86:&APP_SESSION.:FLOW_FLASH_CHART_R#REGION_ID#"
quality="high"
width="&P86_NUM_ROWS."
height="#HEIGHT#"
name="#CHART_NAME#"
scale="noscale"
align=""
allowScriptAccess="sameDomain"
allowNetworking="all"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer"
wmode="transparent"
FlashVars="waiting=#FLASH_WAITING#&loading=#FLASH_LOADING#">
</embed>
</object>
#CHART_REFRESH#

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Is it possible to size a flash chart based on the amount of data returned?

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