Is this not possible? (version checking via plugin only)

[HMBeaty]

I'm toying around with more code , and thought about trying to get rid of my version.php file (which holds all of my version checking for all of my modifications)

Now, in the file, I would have:

PHP Code:

if ($_REQUEST['do'] == 'my_product_id')
{
    echo '<version productid="my_product_id">1.2.3</version>';
} 


And obviously it would be pulled by

www.usmilitarylife.com/version.php?do=my_product_id

Simple enough . Anyway, I'm trying to use the hook location misc_start with the same code as above, and again, by pulling it by:

www.usmilitarylife.com/misc.php?do=my_product_id

However, it returns that lovely "version check failed" error.

So, anyone else tried this? Anything I might be missing? Or is this just not possible to do via a plugin only? :erm: