No currency conversion when setting the product cost in the module last_purchase_product_price

Hello,

I tried your modules for the last invoice product cost valuation price and i get some discrepancies.
1. when i purchase a product for 50usd, even if my company currency is different, it sets the amount at 50 without converting to the right currency.
2. Also when calculating the valuation of the product cost, it should be increased before being set up by the calculation input in the buying price list used in the purchase invoice (buying price != cost price).

I don't know if it is a problem of implementation, of configuration or if i need to use other modules to achieve what i need.

Regards,

Thomas.