Slider via uploaded Image on each node + Fallback I want to create a slider block shown on every page filled with the images uploaded to the active Basic Page, Article, ...
On these pages just the Uploaded Images of the active page should be shown and if there are no images uploaded (e.g. on View pages, Taxonomy pages, ...)
a fallback Slider should be shown.

I've added a Imagefield called Sliderimage to the Basic Page (and the others), created some pages and uploaded individual images to them.

Then I've created a view block with the following settings:
Format: Slideshow (default values from views_slideshow)
Show: Fields
Field: Content:Sliderimage - Rendered File, Original, Display all values in the same row (no seperator)
Filter Criteria: Published
Contextual filter: Content: Nid

But somehow the node id seems not to be delivered to the filters (or I misunderstood it) because
at the contextual filter I choose "Display all results for the specified field" at WHEN THE FILTER VALUE IS NOT AVAILABLE I get all at the different 
pages and with "Hide view" I get nothing would would be right.

If the above issue is solved I want to add  the fallback at "WHEN THE FILTER VALUE IS NOT AVAILABLE" as fixed value or php code. 
Would that be the right way?
Solved because I've found out that block views don't retrieve node-ids by default.

You have to set at "When the filter value is NOT available":
- Provide default value: with type "Content ID from URL"

Now the block view recognizes the ID as well.