Problem in Image map generation

If a bar is 0 value, then it seems like no ImageMapArea is is returned 
for that bar.  This is problematic when the bars link to dynamic values 
for example:

 ImageMapArea imageMapArea= (ImageMapArea) iterator.next();
    html.append( "href=\"processList.jsf?status=" );
    html.append( matchingStatusCodes[mapCount] );
    html.append( "\"" );


Any ideas to get around that?

Travis