There's a nice German [tutorial on AndroidPIT](http://www.androidpit.de/de/android/forum/thread/418890/) ([same page using Google Translate](http://translate.google.com/translate?sl=auto&tl=en&u=http%3A%2F%2Fwww.androidpit.de%2Fde%2Fandroid%2Fforum%2Fthread%2F418890%2F)), explaining this in detail. Moreover, you might want to check with the Q&A [How to check success status of opened URL in Tasker?](http://android.stackexchange.com/questions/21475/how-to-check-success-status-of-opened-url-in-tasker).