Hi jvdz,
Thank you! That worked a charm. The url works in a browser for ESPEasy. It now works in Domoticz. It's just an update to a MAX7219 LED display. So simple but I just couldn't figureit out.

Thank you again, Waaren and jvdz for helping me out.

Hi Waaren.
I tried your code and I get;

Error: EventSystem: in Portable LED Display: [string "-- Send Undercot Temp ..."]:6: attempt to index global 'domoticz' (a nil value)

I am using this in Events. I realise I didn't mention that before, does that make a difference?

Hi Waaren, thanks for having a look for me.

-- Variables
baseurlESPEasy = "http://192.168.1.xx/control?cmd="
commandArray = {}
if devicechanged['Undercot_Temperature'] then
commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..333 }
end


This works.
I just can't figure out how to put a value ...

Hi, I am running Domoticzs on a Synology NAS and I am trying to send a value to an ESPEasy LED display. I can send the dummy info, just as a straight number, e.g.
commandArray[1]={['OpenURL'] = baseurlESPEasy..'7dt,'..333 }
but I can't substitute a sensor value for the number, e.g.

commandArray ...