How do I get the value for p_reference_path for the API wwpro_api_parameters.get_valu

Question

I have one report that lists a set of rows and has a link to
drill down to another report. On the second report, I am trying
to create a link to a form and pass the value received from the
first report. I am trying to use the API
wwpro_api_parameters.get_value but I cannot figure out how to
get the value for the second parameter - p_reference_path.
Here is my code which is found in the "Additional PL/SQL Code"
section, "After displaying the Header".
declare v_id varchar2(10);
begin
v_id := wwpro_api_parameters.get_value
('id', 'a');
htp.anchor ('http://rrlehman-
lap.us.oracle.com/pls/portal30/PORTAL30.wwa_app_module.link?
p_arg_names=_moduleid&p_arg_values=1516531942&p_arg_names=_show_h
eader&p_arg_values=YES&p_arg_names=FRM_ID&p_arg_values=' ||
v_id, 'Create A Topic', NULL, NULL);
end;
No matter what I put in for the second variable,
p_preference_path, I do not get a value for v_id. I have
performed a search in the discussion forums and read all related
threads but I still cannot get it to work.

Answer 1

Please, note that the second parameter of the get_value function is the identifier of the portlet instance, called in the PDK as reference path.
Here you find further information on the topic:
[list]
[*]Documentation of the wwpro_api_provider.get_value function
[*]Guidelines for Parameter Passing in Portlets
[list]