iMacros: How can I select multiple items in a very basic combo box?

Question

A website I work with has a very basic option box set up and I'm trying to create an iMacro that will select multiple values from it on the screen so that I can manually submit the send button. The code looks like this,

<form method="POST">
    <table width="100%">
        <tr>
            <td>
    Dinners: <br/>
<select style="width:auto;" name="dinner:menu" size="10" multiple="multiple">
    <option value="steak" >steak</option> <option value="fish" >fish</option> <option value="rolls" >rolls</option> <option value="chicken" >chicken</option> <option value="fries" >fries</option> <option value="pizza" >pizza</option> <option value="hamburger" >hamburger</option> <option value="cheese" >cheese</option> 
</select>
            </td>
        </tr>
    </table>
</form>

Was this just created too simple for iMacro to be able to identify the options? I want to be able to select multiple ones on screen automatically.

I was basing my attempts off of, TAG POS=1 TYPE=SELECT FORM=NAME:form1 ATTR=NAME:select1 CONTENT=$Apple