Calling APEX form with dynamic parameters from Oracle Apps 11.5.8

I have successfully managed to setup access to APEX forms from Oracle Apps 11.5.8 menus utilising Form Functions passing a number of hardcoded parameter values as outlined in the document, http://www.oracle.com/technology/products/database/application_express/pdf/Extend_Oracle_Applications_11i.pdf.
I am now trying to ZOOM from an Oracle Form passing values of form items (dynamic parameters) to an APEX form. I have so far not been able to do this.
I've also tried using;
web.show_document('http://derep.obup.co.uk:4657/pls/apex/f?p=100:1::::::p1_cust_account_id:'||name_in('ast_cu_act.account_id')||':', '_TOP');
but this prompts for a username/password again as this bypasses the APEX Launch process that is defined in my Form Function.
Is this possible in the parameters section of Form Functions? or elsewhere.
Regards,
Naeem

Hi Daan
We do havea couple of customers doing this, they have taken two approaches:
1. Install XMLP on a separate server entirely - kick off conc request to extract data and then use Java Messaging Service (JMS) to push the resulting XML to the external server where they are using AQ to set up jobs for the XMLP server to work through, generating and delivering the final documents.
2. Set XMLP up as a virtual printer - here the conc request again generates XML but this time the result is directed to a virtual printer namely XMLP. There is a perl or similar wrapper that gets called as the printer and accepts the data, template, output format and delivery destination as parameters.
Apologies for the 10,000 feet overview, hope it helps. Tim

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