hi Henny,
Let me give u an example.
I have the following page where I show the Projects items (meetings, taks, announcements) based on the project ID.
http://sitex/SitePages/Navigation/ProjectPortal.aspx?SourceID=30
I added a quest list view for the tasks and then add a custom toolbar buttom for a new task. I defined the URL
http://sitex/SitePages/Navigation/TaskNewItem.aspx?SourceType=Project
Added an HttpParameter named SourceID but …
I also need send the Source parameter with the current url in the case :
Source=http://sitex/SitePages/Navigation/ProjectPortal.aspx?SourceID=30
Thanks