Simulink mask initialization commands not visible or editable in R2024b

We have Simulink libraries containing subsystems that have masks, and some have mask initialization code.

These all worked fine in R2018a.

We have upgraded to R2024b and saved all libraries in R2024b format.

Now the mask initialization code for these subsystems still all WORKS, but it cannot be viewed or edited.

The mask editor GUI is different. There is a "Code" tab but it contains NOTHING and cannot be edited.

I know the mask initialization code is still there, and it can be viewed in the uncompressed .slx file with a section labelled <Initialization>.

How do we view and edit mask initialization code in R2024b?

Answer 1

[Aabha]

Hi @Andrew Roscoe,

I understand that you want to view and edit the mask initialization code, in MATLAB R2024b. Starting with the MATLAB R2023a release, MATLAB has introduced a feature for organizing mask callbacks and initialization code in a separate MATLAB file, instead of storing it in a mask object. You can find more details about this functionality in the following release notes link: https://www.mathworks.com/help/simulink/release-notes.html?startrelease=R2022a&endrelease=R2023a&rntext=mask+initialization

Additionally, please refer to the following documentation link for more details about writing mask callback code and migrating the existing initialization code to a MATLAB file: https://www.mathworks.com/help/releases/R2023a/simulink/ug/maskcallbackfile.html

I hope this helps.