An enhancement was made in PI Coresight 2013 (which was just recently released) to make this possible. There is a new querystring parameter, Asset, which can be used to configure an existing display to use a different asset (which must be based on the same template as some of the items already on the display). The behavior is the same as when using the Related Assets pane and swapping assets. It's also worth nothing that the Asset querystring parameter accepts multiple assets, in case a display is built with data items from multiple templates.
For example, if the following is a URL to a display based on data items from AF templates for boilers and fans:
The following querystring parameter could be added to set which boiler and fan assets to show when loading the display with this parameter:
This example is included in the PI Coresight 2013 Administration Guide in case you'd like to check out the full details.
Hope this helps,
Can we assume that PI Coresight for iPad/iPhone application supports the querystring parameter feature you have just mentioned?
This is good news ..
I will test this , I have been using coresight 2012