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Session variables do not get updated from a page triggered script

Solved270 views11th June 2026script output
5
Peter den Bak [DevOps Advocate]97 8th June 2026 0 Comments

I have a script and at the end I parse the output back to the visual overview with the following command:

engine.AddScriptOutput(UIVariables.VisualOverview.CreateKey("varSelectedPupC"), fadername);

I even verified that the value has being set correctly with the following commands:

string test = engine.GetScriptOutput(UIVariables.VisualOverview.CreateKey("varSelectedPupC"));

engine.GenerateInformation(test);

Now here is the problem:

When I execute the script from a shape with execute, the value is correctly parsed, and everything works fine.

However, when I execute the script from a page level with execute and with Trigger=ValueChanged and the value of the variable that I monitor changes, the exact same script is correctly triggered, but the session variable does not get parsed back to the visual overview and its value stays unchanged.

What is going wrong?

Peter den Bak [DevOps Advocate] Selected answer as best 11th June 2026

1 Answer

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Maxim Bonte [SLC] [DevOps Member]206 Posted 10th June 2026 3 Comments

Hi Peter,

What you're asking seems to be the same issue as David was encountering:
Visio automatic Execute does not update session variable - DataMiner Dojo.

The page execute will seemingly always use the cardvariable instead of other scopes.
If you would change your Visio visualization to "cardvar:your_variable", it should be shown when executing the script.

I'll look into raising this issue internally and updating the documentation in the meantime to make this more clear.

Peter den Bak [DevOps Advocate] Posted new comment 11th June 2026
Peter den Bak [DevOps Advocate] commented 11th June 2026

Hi Maxim,

Thanks for your the clear explanation.
I made some changes and it now totally works as intended.
I was however womdering if the below tool is already available to the public domain?
https://community.dataminer.services/question/visual-overview-debugging-way-to-show-all-session-variables/?hilite=session+variables

Maxim Bonte [SLC] [DevOps Member] commented 11th June 2026

Hi Peter,

It seems like that tool that you mention was no longer worked on due to other priorities within that team.

If this is something you’d still like to see progressed, I’d recommend raising it on the feature suggestion page:
https://community.dataminer.services/feature-suggestions/

Peter den Bak [DevOps Advocate] commented 11th June 2026

Hi Maxim,
Thanks again for the answer.
I'll raise it on the feature suggestion page

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