Hi, I want to create a button which calls another apex application and in the url the value of an item has to be passed. The link should look like this: http://apex.myaccount/apex/f?p=myname:28:6193562696111::NO:RP:P28_AKTUELLE_SPALTE:myvalue I have to add myvalue from a hidden item P3_HIDDEN, how can I do it? I tried already P3_HIDDEN and &P3_HIDDEN but I was unsuccessful, any help would be very appreciated!