How do I populate PDF Image from ColdFusion?

I created a simple LiveCycle PDF that has 1 image and 3 textfields. Using the ColdFusion code below, I was able to pass data from ColdFusion into the form. However, I can't figure out how to dynamically populate the image. When I run the code, the image is always empty.

Does anyone know how to do this? All of my image paths are stored in a database and need to be dynamic.

ColdFusion Code

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<cfpdfform source="c:\webs\testpdf.pdf" destination="c:\webs\result.pdf" action="populate" overwrite="true">    <cfpdfsubform name="form1">        <cfpdfformparam name="img1" value="C:\webs\jellyfish.jpg"/>        <cfpdfformparam name="txt1" value="Swatch 1"/>        <cfpdfformparam name="txt2" value="Orange"/>        <cfpdfformparam name="txt3" value="Summer 13"/>    </cfpdfsubform></cfpdfform>

Note: Using ColdFusion 9