Hi, I send you my VI in order to give you an idea of whay my cluster array looks like. The array can contain 256 clusters. And in the clusters of the arrray, there is several elements. I would like to keep this kind of structure (array) for my programme. When the user press a button into the arrray from the IHM, I would to know by means of a reference for exemple which was the button pressed by the user. Then with this information, I would be able to treat/calcul the information. However, apparantly it is not easy... I can only know that the values contained into the array have changed, but I don't know which value has changed ... (There is only one value which change at a time). If you have any solution ... Thank you very much ! 😄 Have a nice day !

@altenbach wrote: Here's a quick example: While valid for this Q, watch out for elements added to the array or deleted from the array. Ben

LabVIEW

Solved!

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Thank you bvery much for your help ! 😄

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