discount-group view in admin-order-control

[Ritter]

I would like to have the customer's discount group displayed in the BO when placing an order.
I inserted this code fragment from the .tpl-file in admin/themes/default/template/controllers/orders/helpers/view/view.tpl:

	<div class="col-lg-6">
		<div class="panel">
			<h3><i class="icon-dollar"></i> {l s='Current category discount'}</h3>
			{if !$categorieReductions}
				<div class="alert alert-warning">{l s='None'}</div>
			{else}
				<table class="table">
					<thead>
						<tr>
							<th><span class="title_box">{l s='Category'}</span></th>
							<th><span class="title_box">{l s='Discount'}</span></th>
						</tr>
					</thead>
					<tbody>
					{foreach $categorieReductions key=key item=category }
						<tr class="alt_row">
							<td>{$category.path}</td>
							<td>{l s='Discount: %.2f%%' sprintf=$category.reduction}</td>
						</tr>
					{/foreach}
					<tbody>
				</table>
			{/if}
		</div>
	</div>
</div>

Only the blank panel is shown, not the customer's discount group. The assignment to the customer ID is probably missing. Can someone explain how I can display the discount group assigned to the customer?

[NemoPS]

Did you also edit AdminOrdersController, to assign all those variables?

[Ritter]

That's my problem, I don't know how to assign the variables.