Hi,

It seems to me that you are mixing two different approaches that we volunteers have previously recommended to you.

Your function name indicates that you are using this script to make the visibility property of a group dynamic. In that case, you need to return a boolean value that controls the visibility. In your case, you are always returning an undefined, which is treated as false.

In addition, you are trying to set the visibility of some layers depending on a tag variable without having defined them. You should either dynamize the group visibility or the layer visibility.

I would also recommend changing the device version of the panel to V19.0.0.2. That would make some things easier.

Dynamic group visibility

To dynamically change the visibility of groups based on a tag value, you would not need to do any scripting. You could just use "tag" for the dynamization. If you want a scripting solution, it might look like this:

export function Group_1_Visible_Trigger(item, triggerDataSet) {
  return triggerDataSet("MyTriggerTag").Value;
}

This example uses a boolean tag named "MyTriggerTag". To use this as a trigger, you need to define the trigger. This is done by using the button with the alarm clock icon, selecting "Tags" for the trigger and adding "MyTriggerTag" to the list.

Please note, that this example requires at least V19.0.0.2.

Dynamic layer visibility

Again, the simpler solution - if you are only dynamizing two layers - would be to use a tag dynamization instead of a script.

However, for more layers, you can try an approach like this:

export function Screen_1_OffsetLeft_Trigger(item, triggerDataSet) {
  for (let i = 0; i < 10; i++)
    Layer[i].Visible = (i === triggerDataSet("MyLayerSelection").Value);
  // Since the offset should be 0, return 0
  return 0;
}

This script is used to dynamize the "Offset - left" property of the screen "Screen_1". We do not want to dynamize it, so it will always return 0, but we use it to write a script that is triggered by the MyLayerSelection tag. This tag must be an integer between 0 and 9. The script will loop through the first 10 layers and set the visibility to true only for the layer specified by the tag.

As above, you need to configure the trigger on the "MyLayerSelection" tag.

Feel free to adapt my suggestions to the tag and object names you use.

Kind regards
Stefan

Hi,

Sorry, I have not created a project to answer your question. Can you identify where your current solution is failing? If you can provide more information, we volunteers may be able to solve your problem.

Kind regards
Stefan

Hi,

Sorry, I forgot to reference the screen in my code. Here is a solution for having the symbolic IO field in the screen you want to change the layers visibility.

This script is for the "Change" event of the symbolic IO fields process value!

Note that your approach to accessing an HMI tag by simply writing it's name as if it were a JavaScript variable will always fail. You must use the Tag object!

Kind regards
Stefan

Hi,

In my case, the symbolic IO field is named "sioLayers". When you create a script for the process value change event, the function is named as in my code. Within the script, item addresses the IO field, item.Parent addresses the parent of the field, which - if not used within a group - will be the screen. So if you put lines 2 and 3 in the change event of your symbolic IO field, the script will do its job.

Kind regards
Stefan

Hi,

AutoGen_8472461

It shows an error if Parent or the screen name is been typed.

Please do the following: ignore → compile → download → enjoy.

Kind regards
Stefan

Hi,

You have been presented with several solutions that work. But you seem to have failed several times to implement them.

Yes, as I said, there are several approaches. You can use a tag dynamization for each of the 6 layers you want to make visible and invisible.

However, working with the debugger can help you get a deeper understanding of how the scripts work. And it will help you to figure out the problems yourself. This is how others - including me - develop their scripts.

Kind regards
Stefan