Movilizer MEL methods to use Google Maps API

GoogleMapsRequests.mxml

<!-- 
Google Maps API functions  
 -->
<MovilizerRequest 
	systemId="${#Project#SystemID}" 
	systemPassword="${#Project#Password}" 
	numResponses="0" 
	synchronousResponse="true" 
	useAutoAcknowledge="false" 
	xmlns="http://movilitas.com/movilizer/v15">
	
	<moveletDelete moveletKey="googleMapsRequests" ignoreExtensionKey="true" />
	<moveletSet>
		<movelet moveletKey="googleMapsRequests" 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: Calculates travel time between two points in Google Maps 		-->
				<!-- IN: 																	-->
				<!-- 		beginning. String. First address 								-->
				<!-- 		destination. String. Last address 								-->
				<!-- OUT: Array																-->
				<!-- 	  {		 															-->
				<!-- 	  	time. String with total travel time 							-->
				<!-- 	  	startAddress. String with start address returned by Google Maps -->
				<!-- 	  	startLat. Decimal. startAddress latitude 						-->
				<!-- 	  	startLng. Decimal. startAddress longitude 						-->
				<!-- 	  	endAddress. String with end address returned by Google Maps 	-->
				<!-- 	  	endLat. Decimal. endAddress latitude 							-->
				<!-- 	  	endLng. Decimal. endAddress longitude 							-->
				<!-- 	  }		 															-->
				$global:travelTime = function(beginning, destination){
				
					// Prepares URL to do a request to Google Maps API
					connectionURI = concat("https://maps.googleapis.com/maps/api/directions/json?origin=", beginning, "&amp;destination=", destination);
					
					try{
						// Connect with the API and store the result in a string
						connectionID = connect(connectionURI, 'GET');
						content = readTextAll(connectionID);
						
						// Convert String to JSON
						arrayJSON = jsonToObject(content);
						
						// If status is OK, I received a correct response 
						if (arrayJSON["status"] == "OK"){
							result["time"] = arrayJSON["routes"]["0"]["legs"]["0"]["duration"]["text"];
							result["startAddress"] = arrayJSON["routes"]["0"]["start_address"];
							result["startLat"] = arrayJSON["routes"]["0"]["legs"]["0"]["start_location"]["lat"];
							result["startLng"] = arrayJSON["routes"]["0"]["legs"]["0"]["start_location"]["lng"];
							result["endAddress"] = arrayJSON["routes"]["0"]["legs"]["0"]["end_address"];
							result["endLat"] = arrayJSON["routes"]["0"]["legs"]["0"]["end_location"]["lat"];
							result["endLng"] = arrayJSON["routes"]["0"]["legs"]["0"]["end_location"]["lng"];
						}
						else{
							result = null;
						}
					}
					finally{
						try{
							close(connectionID);
						}
						catch(e){
							$local:exception = e;
						}
					}
					
					return result;
				}
			</syncDownloadAssignment>
			
			<name>Google Maps Requests</name>
		</movelet>
		
		<participant participantKey="${#DEV#ParticipantId}" name="${#DEV#ParticipantName}" deviceAddress="${#DEV#DevideAddress}" />
	</moveletSet>
</MovilizerRequest>