Lua lcdtext, how to update?

[leeoz]

Hi, i am using UI7 and i am newto lua.
I know c.
I would like to have an intrevaled script that will put together an info text and send it to my lcdtext sensor.

1. How do i convert flot number to string and add a text together in lua?
2. I could not find a way to update the S_INFO device on vera using luup? Can u show me how?
   Tnx
   Leeoz