problem with adding combination in cart

[overdoze]

Hi
I need to list all combinations of any product in product.tpl in this form:

* Typeproduct1 -> price combination1 -> add to cart button

* Typeproduct2 -> price combination2 -> add to cart button

* Typeproduct3 -> price combination3 -> add to cart button

but the problem is that when I choose for example to insert the cart in two declination is the default price is added to Cart
here is my code

>{foreach from=$combinations key=id_product_attribute item=comb}
       {assign var='nom' value=$comb.attributes_values[$id_attribute_group]|escape:'htmlall':'UTF-8'}
       {if $nom=='type1' || $nom=='type2' || $nom=='type3'}

</pre>
<table>
{convertPrice price=$product->getPrice(true, $id_product_attribute, 2)}
            {if !$allow_oosp && $product->quantity == 0} style="display:none;"{/if} id="add_to_cart" class="buttons_bottom_block"><input type="submit" name="Submit" value="" class="exclusive" /></p></table>
<br>   {/if}<br>   {/fo

I do know is there any other file to edit to succeed has to cart the price variation for each selected
THX