Rule event-based "analog" triggering

Setup, Configuration and Use Scripts & Rules
1

Hello, I am monitoring my gas fridge. So I have following telegram rule:

// == Send Fridge Gas alarm =========================

rule "Send telegram Fridge"

when
    Item vFridge changed

then
    var adc = vFridge.state
    if( adc < 350 ) 
        sendTelegram( "bot1", "Fridge OFF" )
end

My 2 questions are:

  1. Can I trigger like
Item vFridge changed to <350   (less tan 350)
  1. In my code above, adc can change staying below 350. Then each time it changes to any value below 350 I will get a telegram message?

thanks