Bulk product addition (m_add.tpl)

Hi, I’ m trying to edit the file and replace list price and position short with downloadable and time-unlimited download and be both checked. These are my changes in m_add.tpl (not working):

[b]<tr class="cm-first-sibling"><br />
	<th>{$lang.main_category}</th><br />
	<th>{$lang.product_name}</th><br />
	<th>{$lang.price}</th><br />
	<th>{$lang.downloadable}</th><br />
{*	<th>{$lang.short_description}</th> *}<br />
	<th>{$lang.position_short}</th><br />
	<th>{$lang.status}</th><br />
	<th>&nbsp;</th><br />
</tr><br />
<br />
	<td width="50%"><input type="text" name="products_data[0][product]" value="" class="input-text-long" /></td><br />
	<td><input type="text" name="products_data[0][price]" size="4" value="0.00" class="input-text-medium" /></td><br />
	<td><input type="text" name="products_data[0][downloadable]" value="Y" class="checkbox" /></td><br />
	<td><input type="text" name="products_data[0][position]" size="3" value="0" class="input-text-short" /></td><br />
```<br />
<br />
Does anyone know how can I make it work?<br />

Ok, I don't need this. I found the CSV Import method, its faster.