Pass values to OAF search page (View Purchase Order History)

Question

I need to call a OAF page from a PO Approval Notification. I need to call page View Purchase Order History (func:ICX_PO_REVISIONS).
I am able to create the URL (using function FND_RUN_FUNCTION.get_run_function_url) and when I click on the link it opens the page fine, but it’s a page that contains simple search region and I need to populate the Operating Unit and PO Number fields (I can easily get from the PO) of the search fields, this will allow the user to just click the go button.
Is it possible using the function FND_RUN_FUNCTION.get_run_function_url and passing parameters (field values) or setting the URL to JSP:/OA_HTML/OA.jsp?OAFunc=ICX_PO_REVISIONS&akRegionApplicationId=177&addBreadCrumb=Y&CorePO=Y and then passing the parameters?
How would you achieve this if possible, call the page and populate the search field values? It does not seem to work, I have been able to pass paramaters to an OAF page that does not contain a simple search region to return results.
Function paramaters:
FND_RUN_FUNCTION.get_run_function_url (
p_function_id => 3101,
p_resp_appl_id => 201,
p_resp_id => 50598, -- MS Purcahsing Superuser
p_security_group_id => 0,
p_parameters => 'PoNum=' || l_document_id || '&' || 'retainAM=Y' || '&' || 'addBreadCrumb=Y',
p_override_agent => NULL,
p_org_id => 101,
p_lang_code => NULL,
p_encryptParameters => FALSE);
Thanks,
Shaun

Answer 1

What I found is there are 2 variables SiteName and SiteName1, if you use SiteName1 then it shows proper value as a site description. I replaced SiteName with SiteName1 and it works. This might help to all who are like me and trying Tutorial example.
I am not sure how many may have tried OAF - Tutorial examples. They are really complicated and not easy and in most cases they are not coming out in first try but if you really try then it will give lot of understanding.