But the code shows there is an error. What is that,
Does the plot exist at the specific moment when you try to change it's properties?
From the error message I can say: the answer to this question is "No!"…
and is there any improvement?
You need to create several plots when you want to set properties for several plots!
Right now you create only one plot - and with each iteration of the loop the graph is overwritten…
using LV2016/2019/2021 on Win10/11+cRIO, TestStand2016/2019