Dear Experts,
I created 2 pictures, one picture (NewPdl0) for I/O Field, and one picture (NewPDl1) for Online Trend Control.
My Idea is when i clicked on the I/O Field, the pop-up Online Trend Control will appear with the I/O Field's tag name.
This is my C-Action Code:

NewPdl1 : the picture with Online Trend Control

Trend : The Picture Window Object in NewPdl0

This code is working only in the first time I started runtime. When I closed the pop-up window and clicked again, the pop-up window appeared, but there was nothing in TagName.

Hope you guys teach me how to solve this issue.

Thank you so much and sorry for my bad English.

bg2492

Hello khaikko,

if you would like to set multiple properties in a Trendcontrol,
you need to set the index of the property, before you set the
property themself. Otherwise it is not shure which of the
Properties you set.

see FAQ:
"How do you dynamically configure the time range of the WinCC
Online Trend Control via a script?"

https://support.industry.siemens.com/cs/ww/en/view/11942662

Regards

Georg Berghof

 Thank you so much Sir! It's very helpful to me.