Send a floating decimal number via osc

Hi everybody!
I need to send to a lighting console a value 0.5, but works only 0 or 1. How I've to send it?

//warmup dinner
if (address == '/warmupdinner') {
send('10.10.50.234', '8000', '/exec/7/26',1) //dinner ambra
send('10.10.50.234', '8000', '/exec/7/81',1) //no fx
send('10.10.50.234', '8000', '/exec/7/91',0.5) //luce bianca

  send('10.10.50.234', '8000', '/feedback/pb+exec')
  return // bypass original osc message
}

I assume your doing this in a custom module, you can send 0.5 like you did, nothing wrong here (you can check what open stage control sends by enabling the server's debug option). Are you sure the console can receive a decimal value ?