diff --git a/src/nodeClass.js b/src/nodeClass.js
index 17aa9a0..85d50b5 100644
--- a/src/nodeClass.js
+++ b/src/nodeClass.js
@@ -218,11 +218,11 @@ class nodeClass {
           this.source.childRegistrationUtils.registerChild(childObj.source ,msg.positionVsParent);
           break;
         case 'calibratePredictedVolume':
-          const injectedVol = isFinite(toFloat(msg.payload));
+          const injectedVol = parseFloat(msg.payload);
           this.source.calibratePredictedVolume(injectedVol);
           break;
         case 'calibratePredictedLevel':
-          const injectedLevel = isFinite(toFloat(msg.payload));
+          const injectedLevel = parseFloat(msg.payload);
           this.source.calibratePredictedLevel(injectedLevel);
           break;
         case 'q_in': {
diff --git a/src/specificClass.js b/src/specificClass.js
index d59a12f..66e50b1 100644
--- a/src/specificClass.js
+++ b/src/specificClass.js
@@ -137,23 +137,21 @@ class PumpingStation {
   /* --------------------------- Calibration --------------------------- */
 
   calibratePredictedVolume(calibratedVol, timestamp = Date.now()) {
-    const volumeChain = this.measurements.type('volume').variant('predicted').position('atequipment');
-    const levelChain = this.measurements.type('level').variant('predicted').position('atequipment');
+    const volume = this.measurements.type('volume').variant('predicted').position('atequipment').get();
+    const level = this.measurements.type('level').variant('predicted').position('atequipment').get();
 
-    const volumeMeasurement = volumeChain.exists() ? volumeChain.get() : null;
-    if (volumeMeasurement) {
-      volumeMeasurement.values = [];
-      volumeMeasurement.timestamps = [];
+    if (volume) {
+      volume.values = [];
+      volume.timestamps = [];
+    }
+    
+    if (level) {
+      level.values = [];
+      level.timestamps = [];
     }
 
-    const levelMeasurement = levelChain.exists() ? levelChain.get() : null;
-    if (levelMeasurement) {
-      levelMeasurement.values = [];
-      levelMeasurement.timestamps = [];
-    }
-
-    volumeChain.value(calibratedVol, timestamp, 'm3').unit('m3');
-    levelChain.value(this._calcLevelFromVolume(calibratedVol), timestamp, 'm');
+    this.measurements.type('volume').variant('predicted').position('atequipment').value(calibratedVol, timestamp, 'm3').unit('m3');
+    this.measurements.type('level').variant('predicted').position('atequipment').value(this._calcLevelFromVolume(calibratedVol), timestamp, 'm');
 
     this._predictedFlowState = { inflow: 0, outflow: 0, lastTimestamp: timestamp };
   }
@@ -373,6 +371,7 @@ class PumpingStation {
     return null;
   }
 
+  //scaled for robin min 2039 - 2960 max 53.04
   _scaleLevelToFlowPercent(level) {
     const { minFlowLevel, maxFlowLevel } = this.config.control.levelbased;
     this.logger.debug(`Scaling minflow level : ${minFlowLevel} and maxflowLevel : ${maxFlowLevel}`);
@@ -628,7 +627,7 @@ module.exports = PumpingStation;
 /* ------------------------------------------------------------------------- */
 /* Example usage                                                             */
 /* ------------------------------------------------------------------------- */
-/*
+
 if (require.main === module) {
   const Measurement = require('../../measurement/src/specificClass');
   const RotatingMachine = require('../../rotatingMachine/src/specificClass');
@@ -786,7 +785,7 @@ if (require.main === module) {
 
       console.log('Initial state:', station.state);
       station.setManualInflow(300,Date.now(),'l/s');
-
+      station.calibratePredictedVolume(3.4);
       //await pump1.handleInput('parent', 'execSequence', 'startup');
       //await pump1.handleInput('parent', 'execMovement', 10);
 //