Lex parsing

gistfile1.php

// Stored in textarea in page via Page Types (any Lex tag in here has the same result)
{{ button:generate class="btn-primary btn-large" href="#" icon="icon-mobile-phone" icon-large="true" full-width="true" text="Available on the App Store" }}

// In layout file
{{ if product_links }}
	<div class="well">{{ product_links }}</div>
{{ endif }}

// Result
Parse error: syntax error, unexpected 'null' (T_STRING)
if ("{" "}"):
	{{ product_links }}
endif;

// If I take out the Lex tag from the textarea and just input a string, the if statement works. But not what I wanted...