gre.timer_set_timeout(
    function,
    timeout
)
		    This function creates a one-shot timer which fires after "timeout" milliseconds and then executes "function"
Parameters:
            function       The function to be called when the timer fires
            timeout        The time in milliseconds before the timer should fire
Returns:
            A piece of lightuserdata which serves as an identifier for the timer
Example:
		    
local idval = {}
function cb_func()
    print("CB FUNC HAS BEEN CALLED")
end
--Call cb_func after 1 second
function cb_set_timeout()
    idval = gre.timer_set_timeout(cb_func, 1000)
end