I have created a custom field, Product_URL for my opportunities. I would like this URL in generated quotes, but with a different link text. 
I've been working on the template, but I can't seem to get this link in the template. So what I want is "View Product" to link to the predefined product URL, in the quote.

What I tried so far:
<apex:outputLink value="{!line.Product_URL}">View Product</apex:outputLink>

However, this doesn't seem to work. I've also tried working with a href, but still no result. Anyone know how to solve this?
 

I have created a custom field, Product_URL for my opportunities. I would like this URL in generated quotes, but with a different link text. 
I've been working on the template, but I can't seem to get this link in the template. So what I want is "View Product" to link to the predefined product URL, in the quote.

What I tried so far:
<apex:outputLink value="{!line.Product_URL}">View Product</apex:outputLink>

However, this doesn't seem to work. I've also tried working with a href, but still no result. Anyone know how to solve this?