I'm struggling with Java String Url to call Apex Page .
ORACLE R12.2
Calling from Form Personalization works fine ->
Function: XX_APEX_PAGE1
Parameters : ='p=100:9999:::::EBS_SESSION,APEX_PAGE_ID,P5_INVOICE_ID:[EBS_SESSION],5,'||:INV_SUM_FOLDER.ATTRIBUTE15

Now I want to execute this function in OAF Custom Page
I got OALinkBean
and trying to do somethink like this..
String url =
"RF.jsp"
+ "?function_id=59085"
+ "&resp_id=" + "50838"
+ "&resp_appl_id=" + "200"
+ "&security_group_id=0"
+ "&lang_code=US"
+ "&p=100:9999:::::"
+ "&APEX_PAGE_ID=5"
+ "&P5_INVOICE_ID=" + attribute15;
OALinkBean b = (OALinkBean)webBean.findChildRecursive("OpenInvoice");
b.setTargetFrame("_blank");
b.setDestination(url);
but of course it does not work...
Can anyone can tell how to build correct url string ?