apply a formula to many files

This is possible with VBA in FlexPro Professional.
You could write a macro which imports the files automatically and generates the data sets in FlexPro. You could copy the analysis objects and presentation objects (e.g. formulas, diagrams) from a template database into the project database. Then you can manipulate these objects in FlexPro and it’s not necessary to create these objects with VBA.

See also the ImportFilter example (ImportFilter.FPD).

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In this case you have to manually copy the formula in each folder.
Eventually you can use the activate Folder command:

To do this, you set up several folders in the database. Each folder contains the respective data sets from a certain measurement. You create the document objects and analysis objects in the parent folder. Here, it is important that the data sets from the various measurements are always given the same name.

Now for example, before you update a document and thus trigger a calculation, activate the folder from which the data is to be taken using the (De)activate Folder command. All of the objects in the activated folder are then displayed in the parent folder. Therefore, FlexPro first searches in the activated folder for all data sets referenced in formulas, curves, etc., and then, if they are not found there, it searches within the parent folder.

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