Add or remove value on a tag list

Ignition
1

Hello, I have A Custom listTag on my popup and I binded it with tag TagList.
I want to add/remove a value to the tag TagList when I change a value on my popup

I will use the system.tag. WriteBlocking but I think it will delete other value found on my tag TagList.

Someone Can help me ? how to add or remove value on a tag list without deleting previous values

2
  1. read the tag's value
  2. remove the value you don't want
  3. write the list back to the tag
3

What is this tag's datatype?

4

the type of tag is integer

5

Thank you @pascal.fragnoud , but if there are two users logged in, i think there will be confusion in case both users try to modify the list

6

What do you want to happen in this case? This would be a problem with any shared data such as in a database but there are ways to manage the problem.

Please edit your original post and add the Perspective or Vision tag.

7

These two things together don't make any sense. You can't have an integer tag that is simultaneously a list. Can you explain using Ignition terminology what you're trying to do?

9

I solved it.

I had created UDT tag webcam,

I have 10 webcam,
I add int tag to remplace tag list on UDT tag webcam
beacause, popup is open when I click on a webcam
when I change value of popup, it will whrite value on int tag instead add on tag list

sorry my question was not clear on the first post

10

I solved it.

sorry my question was not clear on the first post