How I change the values in instant data block I modify online the some values but after power off all values going back to old values

I have S7 414 cpu in that I want to change the some values in instant data block but I modify the values online after power off the all values going back to old values

important

I have S7 414 cpu in that I want to change the some values in instant data block but I modify the values online after power off the all values going back to old values

 Hello,

 if I understood well I suggest you to read this FAQ:

https://support.industry.siemens.com/cs/ww/en/view/837001

and

read post of fritz

 https://support.industry.siemens.com/tf/WW/en/posts/db-initial-values-problem/70324?page=0&pageSize=10