Tom:It's possible, but complicated. You need to look into the field definition where we store the listbox contents. Then you can correlate the display item from the bound item. I've done this before in another context. I've appended the script I used. John Brinkmanhttp://blogs.adobe.com/formfeedfunc...

Edgar:Instead of using a validation picture, you could put the logic in a FormCalc validation script and use the format() method. Then if it fails you can clear the field and setFocus() back into the field.Alternatively, you could use a display picture and your validation script could compare rawVal...

I have posted a blog entry with a sample that includes a debugging tool -- a subform that displays the contents of the form dom and data dom and the relationships between them.Have a look at:http://blogs.adobe.com/formfeed/2009/02/form_dom_debugging_tool.html John Brinkman

Duarte:You cannot catch exceptions in FormCalc -- it doesn't have that language feature. If this is important to you, you need to stay with JavaScript. Of course there are certain functions that are available only in FormCalc. There is a way to get at those functions from JavaScript. See my blog pos...

Duarte:I have a blog entry that discussed target version and original version. It also has a sample that shows how you can extract these versions from a form at runtime.http://blogs.adobe.com/formfeed/2009/02/form_compatibility.html John

Ian:It looks like you're not constructing a proper reference to your instance manager. The easy way to do it is to prefix the subform name with an "_". e.g. if your subform is named "detailLine", then the instance manager will be named "_detailLine".To remove all instances, code:_detailLine.count = ...

Try this:1. Wrap your main row and indented row in a subformSet.2. Mark the subformSet as repeating3. Mark your main row and indented row subforms as "not repeating"4. Make sure your subformSet type is: "select one subform from alternatives" John http://blogs.adobe.com/formfeed/

Bill:It might have been this blog entry:http://blogs.adobe.com/formfeed/2008/10/numeric_constraint_no_zeros_2.htmlThe answer is to use a picture clause such as:zero{'n/a'}|num{$zzzz9.99} John

Actually, it's even a bit easier than that. The count property on the instance manager is read/write. To remove all instances of a subform you can code:instanceManager.count = 0; John http://blogs.adobe.com/formfeed/

The easiest way to convert a picture validation to a script validation is to use the formcalc format() function.E.g. the formcalc script to validate a US zip code would look like:format("text{99999}", $) <> ""