Dynamic Data Sets

I'm trying to populate a second dropdown based on the
selected item in the first dropdown. I've been testing out Data Set
Master-Detail Sample but it specifies a field in the first select
"url" which contains the actual name of the url file.
1. I'm using the dynamic xml plugin from Adobe on a CF query.
Thus, I'd like to only pass the variable needed to the dataset
needed. I know it should look something like the example, but the
example is hardcoded, not dynamic ("/photos.php?galleryid=2000").
How do I make this dynamic based on the ID I have in the first
select drop down?
2. Also, I'm getting the error
that..."document.forms[0].select2" is Null or not an object.
3. here's my code:
<script type="text/javascript">
<!--
var dsclientlist = new
Spry.Data.XMLDataSet("/ajax/getclients.cfm",
"export/row",{sortOnLoad:"ClientName",sortOrderOnLoad:"ascending",useCache:false});
dsclientlist.setColumnType("ClientID", "number");
var dsproblemlist = new
Spry.Data.XMLDataSet("/ajax/getproblems.cfm", "export/row", {
method: "POST", postData: "clientrecid=184", headers: {
"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8"
</script>
</head>
<body>
<form name="selectForm" action="">
<div spry:region="dsclientlist">
<select name="select" spry:repeatchildren="dsclientlist"
onchange="document.forms[0].select2.disabled = true;
dsclientlist.setCurrentRowNumber(this.selectedIndex);" >
<option spry:if="{ds_RowNumber} == {ds_CurrentRowNumber}"
value="{ClientID}"
selected="selected">{ClientName}</option>
<option spry:if="{ds_RowNumber} != {ds_CurrentRowNumber}"
value="{ClientID}">{ClientName}</option>
</select>
</div>
<br />
<div spry:region="dsclientlist dsproblemlist">
<select name="select2"
spry:repeatchildren="dsproblemlist">
<option spry:if="{ds_RowNumber} == {ds_CurrentRowNumber}"
value="{dsproblemlist::ProblemID}"
selected="selected">{dsproblemlist::ProblemTitle}</option>
<option spry:if="{ds_RowNumber} != {ds_CurrentRowNumber}"
value="{dsproblemlist::ProblemID}">{dsproblemlist::ProblemTitle}</option>
</select>
</div>
</form>
Thanks,
Michael
Here's the code I'm using

Kin,
Yes, I'm using ClientID from the first select box to try and
pass it to a query to get the values for the second select box. I
tried your code but I think I'm still missing something. With the
"post" method, wouldn't I need to actually do a form submit? Or
would it work just by changing the value in the first drop down?
I'm trying to base my method off of the following example,
but make it dynamic:
http://labs.adobe.com/technologies/spry/samples/data_region/DataSetMasterDetailSample.html
The query to get my second select list values looks like
this:
SELECT ProblemID,ProblemTitle,fgnClientRecID
FROM dbo.tbl_Problems
where fgnClientRecID = #url.ClientID#
My code looks like this:
<script src="/SpryAssets/xpath.js"
type="text/javascript"></script>
<script src="/SpryAssets/SpryData.js"
type="text/javascript"></script>
<script type="text/javascript">
var dsclientlist = new
Spry.Data.XMLDataSet("/ajax/getclients.cfm",
"export/row",{sortOnLoad:"ClientName",sortOrderOnLoad:"ascending",useCache:false});
dsclientlist.setColumnType("ClientID", "number");
var dsproblemlist = new
Spry.Data.XMLDataSet("/ajax/getproblems.cfm", "export/row", {
method: "POST", postData: "clientrecid={dsclientlist::ClientID}",
headers: { "Content-Type": "application/x-www-form-urlencoded;
charset=UTF-8" } });
</script>
</head>
<body>
<form name="selectForm" action="">
<div spry:region="dsclientlist">
<select name="select" spry:repeatchildren="dsclientlist"
onchange="document.forms[0].select2.disabled = true;
dsclientlist.setCurrentRowNumber(this.selectedIndex);">
<option spry:if="{ds_RowNumber} == {ds_CurrentRowNumber}"
value="{ClientID}"
selected="selected">{ClientName}</option>
<option spry:if="{ds_RowNumber} != {ds_CurrentRowNumber}"
value="{ClientID}">{ClientName}</option>
</select>
</div>
<br />
<div spry:region="dsproblemlist">
<select name="select2"
spry:repeatchildren="dsproblemlist">
<option spry:if="{ds_RowNumber} == {ds_CurrentRowNumber}"
value="{dsproblemlist::ProblemID}"
selected="selected">{dsproblemlist::ProblemTitle}</option>
<option spry:if="{ds_RowNumber} != {ds_CurrentRowNumber}"
value="{dsproblemlist::ProblemID}">{dsproblemlist::ProblemTitle}</option>
</select>
</div>
</form>
Thanks,
Mike

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errorvi.JPG ‏50 KB
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