What is wrong with this condition?

Question

1C-Bitrix

Good afternoon, I display the property of the page, it is necessary that if it is empty, it does not display anything.
But under this condition, it only displays the value . What is the error. Thank you<?$APPLICATION->ShowProperty("img")?>

<?if($APPLICATION->ShowProperty("img") > 0):?>
   <img class="img-responsive" src="<?=SITE_TEMPLATE_PATH?>/images/<?$APPLICATION->ShowProperty("img")?>.jpg"/> 
 <?else:?>
 <?endif;?>

Answer 1

Use GetProperty

Answer 2

Write to the property along with the html markup and output via ShowProperty (but remember that this is a deferred function and it does not return the value of the property. It just displays it on the screen).

Answer 3

There is a GetPageProperty