[Plugin: QR Code Tag] Embedding in a Theme not working?

Hi
Great plugin and very customisable which puts it in my “must have” folder.

But …. I’m having an issue merging the code into my template.
I know there’s an issue where it can’t be in a page twice, but I use the widget only in my “contact me” page (via widget logic), so there’s no conflict there.

I’m using a conditional tag as I only want the QR to appear in blog entries and not in regular pages.

In the index.php I located (the_content) and confirmed the correct location by using random text after which correctly appeared at the bottom/end of every blog page.

I swapped the random text with the <img… code as mentioned in the plugin settings page, but it’s not showing and I can’t see why.

I tried variations on the PHP, but I can’t get it working.

The code I used was
‘
<?php if (!is_page()) : ?>
<img src=”<?php
global $qrcodetag;
echo $qrcodetag->getQrCodeUrl($content, $size, $encoding, $ecc, $margin, $version); ?>”>
<?php endif; ?>
‘

I also tried:

<?php if (!is_page()) :  ?>
<?php global $qrcodetag; ?>
<img src="<?php echo $qrcodetag->getQrCodeUrl($content, $size, $encoding, $ecc, $margin, $version); ?>" />
<?php endif; ?>

Neither worked.
Am I missing something obvious?

Ta
CallumW