Method used to connect to a Bluetooth printer from Movilizer

ConnectToBluetoothPrinter.mxml

<!-- 
How to connect with a bluetooth printer from a Movelet  
 -->
<MovilizerRequest 
	systemId="${#Project#SystemID}" 
	systemPassword="${#Project#Password}" 
	numResponses="0" 
	synchronousResponse="true" 
	useAutoAcknowledge="false" 
	xmlns="http://movilitas.com/movilizer/v15">
	
	<moveletDelete moveletKey="connectToPrinter" ignoreExtensionKey="true" />
	
	<moveletSet>
		<movelet moveletKey="connectToPrinter" initialQuestionKey="q1">
		
			<!-- Just an Epsilon Screen -->
			<question key="q1" type="41" title="Epsilon Screen" backNavigationAllowed="true">
				<answer key="q1.a1" nextQuestionKey="END" position="0" />
			</question>
			
			<syncDownloadAssignment>
				
				<!-- DESC: Connect with a bluetooth printer and print text using btspp protocol 							-->
				<!-- IN: 																									-->
				<!-- 		message. String. Message to print 																-->
				<!-- 		printerDirection. String. Its the bluetooth direction of the printer. Example: "00037a331f29" 	-->
				<!-- 		authentication. boolean. Tell us if print needs authentication to connect it 					-->
				<!-- 		pin. Integer. If authentication is true, you need to pass a pin, if not, this parameter is null -->
				<!-- OUT: none 																								-->
				$global:printWithBluetooth = function(message, printerDirection, authentication, pin){
				
					parameters = concat(":1;authenticate=", authentication, ";encrypt=false;master=false;pin=", pin);
					url = concat("btspp://", printerDirection, parameters);
					
					showProgress("Please wait. We're printing");
					btConID = connect(url, null); // Connect with the printer
					
					// If connection returns an integer bigger than negative, connection is correct.
					// If not, there is an error
					if (btConID ?ge 0){
						writeTextLine(btConID, message);
					} 
					else{
						warning("Connection is not available");
					}
					
					close(btConID);
				};
			
			</syncDownloadAssignment>
			
			<name>Bluetooth Printer</name>
		</movelet>
		
		<participant participantKey="${#DEV#ParticipantId}" name="${#DEV#ParticipantName}" deviceAddress="${#DEV#DevideAddress}" />
	</moveletSet>
</MovilizerRequest>