Put A Library Graphic in a Dynamic Field

Question

Here's what I've got:
* In the Library, I have a movieclip which has a dynamic field.  Let's call the MC: "Foo" and the field "BlahField".
* In the Library, I have 3 small ball graphics which I'll call "IconA", "IconB", and "IconC".
I read data from an external file and depending on what I find, I'll use ActionScript to add a Foo movieclip to the stage.  Now, I want to some text in the BlahField, but--depending on the data--I also want to put one of the icons in the field as well.  For the sake of this example, let's say I need IconA
Using ActionScript how do I put the IconA image in Foo.BlahField.text (remembering that I want to pull the image from the Library).
Foo.BlahField.text = ???? + <data from file>;
Thanks,
---Damian

Answer 1

I really appreciate the help.  But still no love.  This is what I did this time:
I cleared out the old attempts.
I re-imported "BlueOrb.png"
I created a new MovieClip symbol which I called "IconA"
I placed BlueOrb on the crosshairs of the new MovieClip and closed it.
I went to the Library, right-clicked the IconA movieclip symbol and chose properties.
In the Symbol Properties window, the Name: field says IconA
I made sure there were checks in Export for ActionScript and Export in frame 1.
In the Class field, I see IconA, and added _Class to the end.  So the class is now: IconA_Class.
The Base class: remains flash.display.MovieClip
I clicked OK to close the window.
I checked my field.  It is dynamic and is set to render HTML.
I then did the following tests:
Foo.BlahField.htmlText = <img src='IconA_Class' >Huzzah!";
Foo.BlahField.htmlText = <img src='IconA_Class()' >Huzzah!";
Foo.BlahField.htmlText = <img src='IconA' >Huzzah!";
Foo.BlahField.htmlText = <img src='IconA()' >Huzzah!";
...still the Huzzah! showed up, but not the image.