recording a value

[marmara]

Hello, I want to record the value of the temperature and the humidity in Excel and display them in the table but also retrieve the old values ​​when I stops and  I restart the program values ​​are added to those registered. The problem is that when I start the program the recording date and even the value is false, it is stuck in the date of the first test !! how to fix this problem if anyone can help me and thank you

[mikeporter]

Its doing that because you are plotting the contents of the measurement file that keeps growing and is never reset. You should consider getting rid of the express VIs they are getting in your way.

Mike...