You didn't read the documentation of the function, did you?
http://www.zenphoto.org/documentation/plugins/media/_zp-extensions---slideshow.php.html#functionprintSlideShow (that is the older plugin but both work the same)
That will not work because you need to pass an album object to it to get any display at all. To get the latest images it is a bit more. You first need to setup a dynamic album for all images, set it to the appropriate sorting and then pass its album object to the function.
Info about objects:
http://www.zenphoto.org/news/zenphotos-object-model-framework
But then i don't want the dynamic album to visible in my general gallery.
I have bird gallery of INDIA which is scientific display by its own family and adding an album random is breaking its flow.
I just want to show visitors some randome 10-15 latest uploaded images there on index page.
my web is : www.wildart.in
Quote:But then i don't want the dynamic album to visible in my general gallery.
That's no problem, just don't publish it:
http://www.zenphoto.org/news/an-overview-of-zenphoto-users#rules-of-protection-andvisibility-for-zenphoto-obj
Without using an album you would have to built the slider completely yourself based on the statistics function. That might not be something for your as you said you are no programmer.