Trouble using an item variable in a report query

Hi,
Apex 4.2
Theme: jQuery Mobile
I have a page with 2 regions. An html region with a select list that populates an item called P1_RESIDENT and below that a report region which will show rows dependent on what is selected in the above select list.
My select list definition is:
select aka as display_value, id as return_value
from RESIDENT
order by 1
The query in my report is:
select decode (two_person_lift,'Y','2 Person Lift','1 Person lift') as "2 person lift"
from resident
where id = :P1_RESIDENT
My expectation is the user will select a person from the list and a name will be displayed and P1_RESIDENT will get set with the return_value of id. The report region will then run and display rows.
Unfortunately all I am getting in the report region is this:
&"DECODE(TWO_PERSON_LIFT,'Y','2PERSONLIFT','1PERSONLIFT')".
What am I doing wrong ?
Thanks
Steve.

Suggest you try to reproduce the problem on apex.oracle.com where we can see it.
What page, region, and report templates are you using?
Are you submitting the page on change of the select list, or using a dynamic action to refresh the report? If the latter, provide full details of the DA, and Is P1_RESIDENT specified in the report region Page Items to Submit property?

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