Populating Address field on pre_render

I'm trying to populate an address field with the billing address information from the current user's data. I do not know what I've done wrong. Also, if I check the box in the form to allow for dynamic population, how do I set up the hooks to get the data I want?

I've created the following code:
add_action("gform_pre_submission_2", "mwn_gform_pre_submission_2");

function mwn_gform_pre_render_2($form){
	$current_user = wp_get_current_user();
	$user_data = get_user_meta($current_user->ID );
  foreach($form["fields"] as &$field)
  	switch($field["id"]){
		case 27:
			foreach($field["inputs"] as &$input) {
				switch($input["id"]){
						case 27.1:
							$input["value"] = $user_data["billing_address_1"][0];
							break;
						case 27.2:
							$input["value"] = $user_data["billing_address_2"][0];
							break;
						case 27.3:
							$input["value"] = $user_data["billing_city"][0];
							break;
						case 27.4:
							$input["value"] = $user_data["billing_state"][0];
							break;
						case 27.5:
							$input["value"] = $user_data["billing_postcode"][0];
							break;
						default:
							break;
				}
			}
			break;
		default:
			break;
	}

	return $form;
}

Handling via priority support.