Clarification on how to find region id, and use it with $a_report command

Question

Hi, I am new to javascript, so bear with me. :)
we have a tree called species that expands to allow users to select a particular type of fish species. This tree lies in a region called SPECIES.
the species that a user has selected populate a report which is comprised of a collection and is in the region FAVORITES.
I have created the hidden variable P900_REPORT_ID and placed it in the region FAVORITES.
in the footer region of FAVORITES I have the following:
<script type="text/javascript">
$s('P900_REPORT_ID',value) = '#REGION_STATIC_ID#'.substr(1);
</script>
and finally, in the after header region I have javascript including:
function addCollection(pValue,r,s,t)
var get =
new htmldb_Get(null,&APP_ID.,'APPLICATION_PROCESS=add900ToCollection',0);
get.add('P110_SELECTED_NODE',pValue);
gReturn = get.get();
get = null;
$a_report('P900_REPORT_ID','1','15','15');
It does not appear that P900_REPOR_ID is ever populated. The tree does appear, the nodes expand, the user selects a species, and then the tree collapses completely without populating the collection FAVORITES.
again, I am so new to javascript that I am not certain if I am explaining properly...and thoughts?

Answer 1

I have modified the region footer in FAVORITES to be:
$s('P900_REPORT_ID','#REGION_STATIC_ID#'.substr(1));
</script>
and modified the javascript for ADDCOLLECTION to:
$a_report($x('P900_REPORT_ID').value,'1','10','100');
this appears to work, but just received the following error. Do any of you have experience with this? thanks again? Karen
Checksum error for Hidden and Protected item ID (84072206841759984), value (314246866896649185), posted checksum (5BD5912E5426E28CF0F87946112B0937), expected checksum (********************************), index_i (14), index_j (2), index_m (9);
Return to application.