I have installed a .swf flash banner in my wide-banners are but all I can see is the whitespace where the banner should be and no .swf animated flash.

I follwed the tutorial here:

zenflavor.com/how-to-display-flash-in-zen-cart-banner-locations.html

I have tested the html ebmed code and it does work in browers, but placing the same code in the banner box 'banner manager' HTML Text: area does not work for me.

Where am I going wrong here?