Setpoint not send

[tobof]

I try to send ORP calibration value to my sensors but it doesn't work.
NODE_ID : 10, CHILD_NODE_ID : 0
When I'm recieve ORP from my sensors it's ok :

13:55:38.216 [DEBUG] [rs.internal.protocol.MySensorsReader] - 10;0;1;0;52;996.3

But when I change the value, the value is not send :

14:09:24.051 [INFO ] [marthome.event.ItemStateChangedEvent] - orp01 changed from 40 to 50
14:09:24.266 [INFO ] [smarthome.event.ItemCommandEvent    ] - Item 'orp01' received command 60
14:09:24.266 [DEBUG] [rs.internal.protocol.MySensorsWriter] - Sending to MySensors: 10;0;1;0;0;

Item :

Number orp01 "Redox [%.1f mV]" <faucet> (gPiscine) { channel="mysensors:waterQuality:gateway:orp01:orp"}
Sitemap :

sitemap test label="Main Menu" { 
  Frame label="Piscine" { 
      Setpoint item=orp01 label="Calirabte ORP" minValue=0 maxValue=1000 step=10
  } 
}