Execute a code every time I open a list-item

[Anonymous]

I want to execute this code every time I open a list-item in a Sharepoint list:

ClearCollect(
    AuxCollection;
    lstBookEntriesDetail
);;
ClearCollect(
    BookEntryCollection;
    Filter(
        AuxCollection;
        MasterID = SharePointIntegration.SelectedListItemID
    )
)

 Any idea how can I do it?

Many thanks in advance,

Marina.

[Nogueira1306]

Hey! Have a gallery with the sharepoint itens. Then, on select property, write that