the first issue I see is that the checkboxes are not a part of the eCart Add to cart button forms.
the first thing you will need to do is create a column in the eCart object that will store the platter selections. lets name the Column platerOptions.
In the add to cart button, set the platerOptions column to be updateable from a text box, this will add the text box to the page like:
<input type="text" name="cupcake1_1_platerOptions_Add" value="">
you can change the type to a checkbox and add the label and value, the important thing is to use the same name, and to add "[]" at the end of the name. make sure to set the value to what you would like to display in the cart:
php:
<label><input type="checkbox" name="cupcake1_1_platerOptions_Add[]" value="Smoked Turkey and Swiss" id="cupcake1_1_platerOptions_Add_0" />
Smoked Turkey and Swiss</label><br />
<label><input type="checkbox" name="cupcake1_1_platerOptions_Add[]" value="BLT" id="cupcake1_1_platerOptions_Add_1" />
BLT</label><br />
<label><input type="checkbox" name="cupcake1_1_platerOptions_Add[]" value=" Tuna Salad" id="cupcake1_1_platerOptions_Add_2" />
Tuna Salad</label><br />
then add the following code at line 1 of your page:
php:
<?php
foreach($_POST as $key => $val) {
if(is_array($_POST[$key])) $_POST[$key] = implode(", ",$_POST[$key]);
}
?>
