App designer error-Error using indexing Dot indexing is not supported for variables of this type.

I am now using app designer to create an GUI to simulate my simulink file. Here is my code:

I want to export the Editfield.value to the block in my simulink file as below:

And finally display the outcome of simulink to my app designer.

Here is my problem:

(1)I cannot figure out what kind of the error in my first picture is.

(2)How can I export my value in text Editfield to simulink as well? The type of array seems to be not the same as single variable.

Answer 1

[Brahmadev]

Hi Chiang,

I understand that you would like to use read Parameters from a masked block from Simulink in AppDesigner. You can use the following code to get the values of different parameters from the "Vehicle Body 1DOF Longitudinal" block mask.

% Button pushed function: Button
function goPushed(app, event)
MaskHandle = Simulink.Mask.get('testing_mask_parameters/Vehicle Body 1DOF Longitudinal');
disp(MaskHandle.Parameters.Value);
end

This will give you the Parameters as a comma seperated list.

You can refer to the following documentation “Control Masks Programmatically” for more information:

https://www.mathworks.com/help/simulink/ug/control-masks-programmatically.html

Hope this helps!

Best Regards,

Brahmadev