I start on Domoticz

I want to use Domoticz like an acquisition card
i use arduino Uno or Nano (mega 328P) and FS1000A like a sensor
i want to transmit many variable
For my first test i have install "Oregon" sketch on arduino (i find on web, for simulate température sensor oregon with arduino)
Because i havn't température sensor for wiring on my arduino i use variable
On domoticz i see my sensor see picture
setup device :
on my arduino code, i have duplicate code when send temperature on 433mhz and i have change ID(BC20 and BB20) so i can transmit different variable
temperature :
see max is 150.5°(150° on image) (if i ad a value more than 150.5, the real value are not displayed)
Graph :
see, i change variable on arduino code and value change on domoticz
Now if my explanation is understand

If it's possible ( i'm automatician, i know « c » language but other language a little, i understand the structure of code)
I want transmit value more big, if i can send a float variable, i can send a integer variable ?
And after is possible i want to create a widget for différents value because value is not a temperature, is it possible to create an universal widget ?
Today the code on arduino transmit trame same like oregon temperature sensor, so i can modify to transmit different data but i don't know the principe of 433mhz, if anyone can explain frame for Domoticz understand the message, i can code for adapt different value because for exemple, i don't want transmit battery level
finally, i want to transmit value with 433mhz on arduino to domoticz on after i want to observe graph with different variable on the same graph

If anyone can help me or redirect me where i must post my explanation

If you want more explanation i can

Very thanks
Tom