how to trend past value without affect logging

Good day :)

Recently i added trend object to pull data out from mysql database, with combo box to choose the timestamp. I noticed that after adding the trend object and run it, my data logging stops working. I don't seems to able to pull any data from the database yet, but the main problem is my data logging stopped :blink:

Shouldn't trend object will not affect the data logging in the background? :confused: