diff --git a/src/main/scala/nova/monadic_sfx/implicits/JavaFxMonixObservables.scala b/src/main/scala/nova/monadic_sfx/implicits/JavaFxMonixObservables.scala
index 74379f7..9f9e482 100644
--- a/src/main/scala/nova/monadic_sfx/implicits/JavaFxMonixObservables.scala
+++ b/src/main/scala/nova/monadic_sfx/implicits/JavaFxMonixObservables.scala
@@ -11,6 +11,7 @@ import monix.eval.Coeval
 import monix.execution.Ack
 import monix.execution.Cancelable
 import monix.execution.Scheduler
+import monix.execution.cancelables.CompositeCancelable
 import monix.execution.cancelables.SingleAssignCancelable
 import monix.reactive.Observable
 import monix.reactive.Observer
@@ -43,11 +44,17 @@ trait JavaFXMonixObservables {
   implicit def extendedObservableList[A](
       list: ObservableList[A]
   ) = new ObservableListExt(list)
+  implicit def extendedStringObservableList(
+      list: ObservableList[String]
+  ) = new StringObservableListExt(list)
   implicit def extendedObjectPropertyObservableList[A](
       prop: ObjectProperty[ObservableList[A]]
   ) = new ObjectPropertyObservableListExt(prop)
   implicit def extendedButton(button: ButtonBase) = new ButtonBaseExt(button)
   implicit def extendedMenuItem(item: MenuItem) = new MenuItemExt(item)
+
+  // implicit val implShowForOsRelPath = Show.fromToString[os.Path]
+  implicit def osRelPath2String(path: os.RelPath): String = path.toString()
 }
 
 object JavaFXMonixObservables {
@@ -99,16 +106,18 @@ object JavaFXMonixObservables {
 
   final class PropertyExt[T, J](private val prop: Property[T, J])
       extends AnyVal {
-    def -->(op: Observer[T]) = {
-      op.onNext(prop.value)
+    def -->[J1 >: J](sub: Observer[J1]) = {
+      prop.onChange((a, b, c) => if (c != null) sub.onNext(c))
     }
 
     def ==>(op: Property[T, J]) = {
       op <== prop
     }
 
-    def <--(obs: Observable[T])(implicit s: Scheduler) = {
-      obs.doOnNextF(v => Coeval(prop.value = v)).subscribe()
+    def <--(
+        obs: Observable[_ <: T]
+    )(implicit s: Scheduler, c: CompositeCancelable): Unit = {
+      c += obs.doOnNextF(v => Coeval(prop.value = v)).subscribe()
     }
 
     def asOption = prop.map(Option(_))
@@ -211,11 +220,20 @@ object JavaFXMonixObservables {
       } else Task.unit
   }
 
+  final class StringObservableListExt(
+      private val buffer: ObservableList[String]
+  ) extends AnyVal {
+    // def ++=[T](that: Seq[T])(implicit S: Show[T]): Unit =
+    //   buffer ++= that.map(S.show)
+    // def ++=[T](that: Seq[T])(implicit C: CssPath[T]): Unit =
+    //   buffer ++= that.map(C.path)
+  }
+
   final class ReadOnlyPropertyExt[T, J](
       private val prop: ReadOnlyProperty[T, J]
   ) extends AnyVal {
-    def -->(op: Observer[T]) = {
-      op.onNext(prop.value)
+    def -->[J1 >: J](sub: Observer[J1]) = {
+      prop.onChange((a, b, c) => if (c != null) sub.onNext(c))
     }
 
     def ==>(op: Property[T, J]) = {