Product ID error question

[Singularity]

I have configured a product in the admin area of WHMCS, and I have used this code

<script language="javascript" src="feeds/productsinfo.php?pid=1&get=price
&billingcycle=monthly"></script>

to link this to the front end of the website, i have made one small change to the code (this is directly off the Data Feeds page in the documentation - http://docs.whmcs.com/Data_Feeds#Product_Pricing) I changed mine to read

<script language="javascript" src="billing/feeds/productsinfo.php?pid=1&get=price
&billingcycle=monthly"></script>

but I am not getting the product to show up, instead the page is telling me "Product ID Not Found"

 

Can anyone please tell me where do I find this product ID so that I can put the right number into the code?

 

Thank you

[brian!]

setup -> products/services -> products/services -> choose your product and press its edit button (2nd from right), and then look in the "Links" tab - you should be able to view the products id in there.