blank combobox, what's missing?

I'm newbie to struts so I hope O can state the question clearly.

so...I would like to have a combobox with items on my form (say categories)

in my startupMangaer.java I wrote:

ArrayList categories = new ArrayList();
categories.add("Classical");
categories.add("Country");
categories.add("Easy Listening");
categories.add("Heavy Metal");
categories.add("Jazz");
categories.add("New Age");
categories.add("Pop/Rock");
categories.add("R & B");
categories.add("World");
sc.setAttribute("categories",categories);

In my struts-config.xml i wrote:

<plug-in className="dummies.struts.group.StartupManager" />
//I checked it and it works (the categories is populated by the code above)
and in the form I have:

<form-property name="categories" type="java.util.ArrayList" />

In the jsp page I wrote:

<td align="left">
<html:select property="category">
<html

ptions
property="categories" />
</html:select>
<html:errors property="category" />
</td>

so, once the jsp is up and running...I don't see the items - it's a blank combobox - anyone???

Thank you
Peter

change:

<html

ptions property="category" />

to:

<html

ptions collection="category" />

For more information on how to use these tags, refer to:

http://struts.apache.org/struts-doc-1.2.x/userGuide/struts-html.html#options
[ February 06, 2006: Message edited by: Merrill Higginson ]