diff --git a/libs/core/_locales/core-jsdoc-strings.json b/libs/core/_locales/core-jsdoc-strings.json
index 40c39a29..8ce7b254 100644
--- a/libs/core/_locales/core-jsdoc-strings.json
+++ b/libs/core/_locales/core-jsdoc-strings.json
@@ -32,8 +32,7 @@
   "input.ColorSensor.reflectedLight": "Get current reflected light value from the color sensor.",
   "input.GyroSensor.angle": "Get the current angle from the gyroscope.",
   "input.GyroSensor.rate": "Get the current rotation rate from the gyroscope.",
-  "input.InfraredSensor.onObjectNear": "Registers code to run when an object is getting near",
-  "input.InfraredSensor.onObjectNear|param|distance": "the proximity, eg: 10",
+  "input.InfraredSensor.onObjectNear": "Registers code to run when an object is getting near.",
   "input.InfraredSensor.onObjectNear|param|handler": "the code to run when detected",
   "input.InfraredSensor.proximity": "Get the promixity measured by the infrared sensor, from ``0`` (close) to ``100`` (far)",
   "input.InfraredSensor.remoteCommand": "Get the remote commandreceived the infrared sensor.",
@@ -42,7 +41,6 @@
   "input.TouchSensor.onEvent|param|body": "code to run when the event is raised",
   "input.UltraSonicSensor.distance": "Gets the distance from the sonar in millimeters",
   "input.UltraSonicSensor.onObjectNear": "Registers code to run when the given color is close",
-  "input.UltraSonicSensor.onObjectNear|param|distance": "the distance in centimeters when an object is close, eg: 10",
   "input.UltraSonicSensor.onObjectNear|param|handler": "the code to run when detected",
   "input.buttonDown": "Down button on the EV3 Brick.",
   "input.buttonEnter": "Enter button on the EV3 Brick.",
diff --git a/libs/core/_locales/core-strings.json b/libs/core/_locales/core-strings.json
index 89226773..363812af 100644
--- a/libs/core/_locales/core-strings.json
+++ b/libs/core/_locales/core-strings.json
@@ -41,13 +41,13 @@
   "input.ColorSensor.reflectedLight|block": "%color| reflected light",
   "input.GyroSensor.angle|block": "%sensor|angle",
   "input.GyroSensor.rate|block": "%sensor|rotation rate",
-  "input.InfraredSensor.onObjectNear|block": "on %sensor|object within %distance",
+  "input.InfraredSensor.onObjectNear|block": "on %sensor|object near",
   "input.InfraredSensor.proximity|block": "%infrared|proximity",
   "input.InfraredSensor.remoteCommand|block": "%infrared|remote command",
   "input.TouchSensor.isTouched|block": "%sensor|is touched",
   "input.TouchSensor.onEvent|block": "on %sensor|%event",
   "input.UltraSonicSensor.distance|block": "%sensor|distance",
-  "input.UltraSonicSensor.onObjectNear|block": "on %sensor|object within %distance|cm",
+  "input.UltraSonicSensor.onObjectNear|block": "on %sensor|object near",
   "input.buttonDown|block": "brick button down",
   "input.buttonEnter|block": "brick button enter",
   "input.buttonLeft|block": "brick button left",
diff --git a/libs/core/ir.ts b/libs/core/ir.ts
index ff5fb7bd..08624987 100644
--- a/libs/core/ir.ts
+++ b/libs/core/ir.ts
@@ -123,24 +123,25 @@ namespace input {
         }
 
         /**
-         * Registers code to run when an object is getting near
-         * @param distance the proximity, eg: 10
+         * Registers code to run when an object is getting near.
          * @param handler the code to run when detected
          */
         //% help=input/infrared/on-object-near
-        //% block="on %sensor|object within %distance"
+        //% block="on %sensor|object near"
         //% blockId=infraredOnObjectNear
         //% parts="infraredsensor"
         //% blockNamespace=input
         //% weight=100 blockGap=8
-        //% distance.min=1 distance.max=95
         //% group="Infrared Sensor"
-        onObjectNear(distance: number, handler: () => void) {
-            this.proximityThreshold = Math.max(1, Math.min(95, distance));
+        onObjectNear(handler: () => void) {
             control.onEvent(this._id, PromixityEvent.ObjectNear, handler);
             if (this.proximity() == PromixityEvent.ObjectNear)
                 control.runInBackground(handler);
         }
+
+        setObjectNearThreshold(distance: number) {
+            this.proximityThreshold = Math.max(1, Math.min(95, distance));
+        }
         
         /**
          * Get the promixity measured by the infrared sensor, from ``0`` (close) to ``100`` (far)
diff --git a/libs/core/ultrasonic.ts b/libs/core/ultrasonic.ts
index 008be83d..5674ad98 100644
--- a/libs/core/ultrasonic.ts
+++ b/libs/core/ultrasonic.ts
@@ -34,24 +34,25 @@ namespace input {
 
         /**
          * Registers code to run when the given color is close
-         * @param distance the distance in centimeters when an object is close, eg: 10
          * @param handler the code to run when detected
          */
         //% help=input/ultrasonic/on-object-near
-        //% block="on %sensor|object within %distance|cm"
+        //% block="on %sensor|object near"
         //% blockId=ultrasonicOnObjectClose
         //% parts="infraredsensor"
         //% blockNamespace=input
         //% weight=100 blockGap=8
         //% group="Ultrasonic Sensor"
-        //% distance.min=1 distance.max=250
         onObjectNear(distance: number, handler: () => void) {
-            this.promixityThreshold = Math.max(1, Math.min(95, distance));
             control.onEvent(this._id, PromixityEvent.ObjectNear, handler);
             if (this.distance() == PromixityEvent.ObjectNear)
                 control.runInBackground(handler);
         }
 
+        setObjectNearThreshold(distance: number) {
+            this.promixityThreshold = Math.max(1, Math.min(250, distance));
+        }
+
         /**
          * Gets the distance from the sonar in millimeters
          * @param sensor the ultrasonic sensor port