--- a/gwt-client/src/main/java/org/dive4elements/river/client/shared/model/SalixZone.java	Wed Jul 11 10:19:53 2018 +0200
+++ b/gwt-client/src/main/java/org/dive4elements/river/client/shared/model/SalixZone.java	Wed Jul 11 13:36:18 2018 +0200
@@ -123,11 +123,11 @@
         return false;
     }
 
-    private Double getLowerFromTo() {
+    public Double getLowerFromTo() {
         return this.fromKm < this.toKm ? this.fromKm : this.toKm; // Math. is forbidden :-(
     }
 
-    private Double getUpperFromTo() {
+    public Double getUpperFromTo() {
         return this.fromKm > this.toKm ? this.fromKm : this.toKm;// Math. is forbidden :-(
     }