Error trying to send update to SmartThings

Add-ons Bindings
1

Hi. I’m trying to set the temperature on a thermostat via SmartThings and I’m getting an error. I have a rule that does:

bedroomHeatingSetpoint.sendCommand(64)

I see the following in the log file:

[WARN ] [ernal.converter.SmartthingsConverter] - Warning - The Smartthings converter does not know how to handle the org.openhab.core.library.types.QuantityType command. The Smartthingsonverter class should be updated. CapabilityKey: thermostatHeatingSetpoint, displayName: BEDROOM, capabilityAttribute heatingSetpoint

The item is linked the Channel:
smartthings:thermostatHeatingSetpoint:HomeHub:BedroomThermostatHeatingSetpoint:heatingSetpoint
and the Thing looks like:
smartthings:thermostatHeatingSetpoint:HomeHub:BedroomThermostatHeatingSetpoint

Am I doing something wrong?

Thanks