Trouble Calling Suitelet

Hi,

I'm playing around with my first attempt at incorporating google maps. I've created a suitelet that I've verified as working by calling directly from the address bar, however, upon the load of the record, I can't seem to get it to work. Here is my code:

function googleMapForm(type, form)   {       if ( type == 'view' || type == 'edit' )       {           /* Add Google Map tab to page. */           var tab = form.addTab( 'custpage_googlemap_tab', 'Google Map' )           form.insertTab( tab, 'general' )           nlapiLogExecution('debug','Test 1', 'Success');          var map = form.addField('custpage_googlemap', 'inlinehtml', null, null, 'custpage_googlemap_tab')           nlapiLogExecution('debug','Test 2','Success');          /* Generate URL for Suitelet, include internalid of the current customer. */           var serverUrl = nlapiResolveURL( 'SUITELET', 'customscript_google', 'customdeploy_google' ) + '&truckloadid='+nlapiGetRecordId();           nlapiLogExecution('debug','Details','serverUrl = '+serverUrl)          /* Output IFRAME container for Google map page. */           map.setDefaultValue( '<iframe src="'+serverUrl+'" style="width: 504px; height: 404px; margin:0; border:0; padding:0"></iframe>' )           nlapiLogExecution('debug','Test 3', 'Success');      }   }