Creating a drop down list within FORM to SHOW

[FounderSim]

My commented line is where my error is.

Ive tried a few other things such as $petField = new buildDropDownList("adopt", "AdoptTypeList");

I tried to see if i could hmm by-pass? the buildDropDownList and access the
buildAdoptTypeList($name) directly so I tried

$petField->add(new buildAdoptTypeList("test"));
$petField = new buildAdoptTypeList("test");

none seem to work. i dunno. any help would be apreaciated.

I can't seem to get an actual error besides " Internal Server Error 500" I can't seem to put error reporting on. I am not sure if mysidia has it turned off by default or its something else.

	public function add(){
	    $mysidia = Registry::get("mysidia");
		$document = $this->document;	
		$document->setTitle("TEST");

		$explorerForm = new Form("addform", "add", "post");

		$petField = new FieldSet("pet");
		$petField->add(new Legend("Adding a Explore Pet"));
		//$petField->add(new buildDropDownList("adopt", "AdoptTypeList"));
		$petField->add(new Comment("Pet Chance:", TRUE, "b"));
		$petField->add(new TextField("textPetPerc"));
		$explorerForm->add($petField);

		

		$myButton = new FieldSet("Test It");
		$myButton->add(new Legend("required?"));
		$myButton->add(new Button("Testing", "submit", "submit"));
		$explorerForm->add($myButton);