How to callback a matrix (which is an output of another function) in App Designer?

The startup function of the App Designer outputs several matrixes which has to be used on a different callback (button pushed)

The button push callback contains, multipication of that output matrix with another matrix.

How can I do that?

app.mu (mu is a matrix), does not work when I am trying to multiply it with a different matrix.

Answer 1

[Maximilian Panzik]

Add mu as an app property and in your startup function assign the matrix mu to app.mu. See Link for more information.