api.put question

[muc 1]

I want to use api.get/put in a scene to change the parameters of my BeNext dimmer (without template).

reading parameters works, then change e.g. the value of 3rd parameter:

param= api.get("/devices/"..idDev).properties.parameters
if param ~= nil then
  for j= 1, #param do
    print(param[j].value)
  end
  param[3].value= 77
  ???
end

but I don't know how to write the changed parameters:

???   api.put("/devices/"..idDev.."/properties/parameters", param)   ???

anybody knows the right command?
 

PS: is it necessary to change .lastSetValue and .lastReportedValue, too ?

Edited September 23, 2016 by muc

[muc 1]

Hooray! This really works:

(I want to change "Dimming Speed" to newValue)

idDev= dimmer's id
idDimmSpeed= 7   --  id of parameter "Dimming Speed" by manual

param= api.get("/devices/"..idDev).properties.parameters

if param ~= nil then

  for j= 1, #param do
    local p= param[j]
    if p.id == idDimmSpeed then
      paramNrDimmSpeed= j  --  parameter's number in HC2
      break
    end
  end

  p= param[paramNrDimmSpeed]
  p.value= newValue
  p.lastReportedValue= newValue
  p.lastSetValue= newValue

  x= {}
  x.id= idDev
  x.properties= {}
  x.properties.parameters= param

  api.put("/devices/"..idDev, x)

end


remaining question: is there any feedback of api.put possible ?