What you can do is to create the Simulink.Parameter as a temparary object and assign all its properties and then addEntry().
A more severe shortcoming is when the Simulink.Parameter object already exists in the SLDD and you want to modify its properties.
I had this service request with the Mathworks tech support in Feb. 2019 regarding R2018b. Checking the R2020a document online, there is still no improvement.
% The request
In the attached Test.sldd file created in R2018b, there is a Simulink.Parameter object named "Param". I want to change its data type to "single" through API.
Following standard API, I found it difficult to access the properties of the Simulink.Parameter object.
hSLDD=Simulink.data.dictionary.open('Test.sldd');
hDataSect=hSLDD.getSection('Design Data');
hEntry=hDataSect.getEntry('Param');
While getValue(hEntry) returns a copy of the parameter object,
setValue(hEntry,'DataType','single') (my imaginary syntax) is invalid
To use setValue(), I have to make a copy first.
temp=getValue(hEntry);
set(temp,'DataType','int32');
setValue(hEntry,temp)
I know I can also use evalin(hDataSect,'Param.DataType=''single'';'). But that seems not ideal if I want to change several properties of an abject and I have hundreds of objects.
Anyway, I want to ask if there is a direct API method to get and set the properties of Simulink.Parameter or Simulink.Signal objects in a SLDD. Thanks!
% the reply
I understand that you would like to have a API method to change a Simulink.Parameter object's data type to "single".
There is currently not a direct API way to modify entries in SLDD. The best way would be to create a temp variable as mentioned in your description.
I apologize for the inconvenience this causes you and I will report this to our developers to hopefully have this functionality implemented in future releases.
