diff --git a/simconnect-sdk/src/domain/notification.rs b/simconnect-sdk/src/domain/notification.rs
index cab51ba..d76602b 100644
--- a/simconnect-sdk/src/domain/notification.rs
+++ b/simconnect-sdk/src/domain/notification.rs
@@ -33,6 +33,9 @@ pub struct Object {
     pub(crate) data_addr: *const u32,
 }
 
+unsafe impl Send for Object {}
+unsafe impl Sync for Object {}
+
 impl Object {
     /// Try and transmute this SimConnect object as a `T` struct.
     ///
diff --git a/testapp/src/main.rs b/testapp/src/main.rs
index b0f51c0..b459aca 100644
--- a/testapp/src/main.rs
+++ b/testapp/src/main.rs
@@ -31,8 +31,6 @@ fn main() -> Result<(), anyhow::Error> {
 
     // .subscribe(SomeEvent);
 
-    let mut id = 0;
-
     let ctrl_c = CtrlC::new();
 
     loop {
@@ -41,7 +39,7 @@ fn main() -> Result<(), anyhow::Error> {
                 Notification::Open => {
                     simconnect.subscribe_to_system_event(SystemEventRequest::FlightLoaded)?;
 
-                    simconnect.register_object::<AtcID>()?;
+                    let id = simconnect.register_object::<AtcID>()?;
                     simconnect.register_object::<Fuel>()?;
 
                     let cs = CString::new("ITWORKS")?;
@@ -50,7 +48,8 @@ fn main() -> Result<(), anyhow::Error> {
                         buffer[i] = *b as i8;
                     }
 
-                    simconnect.set_data_on_sim_object(&mut AtcID { value: buffer })?;
+                    simconnect
+                        .set_data_on_sim_object_with_id(id, &mut AtcIDCPacked { value: buffer })?;
                     tracing::info!("ATC_ID set");
 
                     simconnect.set_data_on_sim_object(&mut Fuel {
@@ -78,6 +77,7 @@ fn main() -> Result<(), anyhow::Error> {
                             buffer[i] = *b as i8;
                         }
 
+                        let id = simconnect.get_object_id::<AtcID>()?;
                         simconnect.set_data_on_sim_object_with_id(
                             id,
                             &mut AtcIDCPacked { value: buffer },