How to access parameter attributes from data dictionary in Simulink block

Hello,

I am using a data dictionary for my model in Simulink to access parameters. I have defined the parmeter values and its other attributes such as min value and max value etc.

I want to call the min and max values in a simulink block e.g., as constant. I tried to call it as

Param.Min

Unable to resolve the name 'Param.Min'.

and

Param.Max

It shows the value but gives me error while running the model saying "dot value attribution is not supported."

Does anyone know how to access these attributes without redefining them? I am using following code to create my data dictionary.

myDictionaryObj = Simulink.data.dictionary.create('myDictionary.sldd');
myDictionaryObj = Simulink.data.dictionary.open('myDictionary2.sldd');
toolDataSectObj=getSection(myDictionaryObj,'Design Data');
ParameterFile = readtable('test_Param.xlsx');
for i = 1:height(ParameterFile)
    param = Simulink.Parameter;
    param.Value = ParameterFile.Value(i);
    param.Max = ParameterFile.Max(i);
    param.Min = ParameterFile.Min(i);
    param.Description = char(ParameterFile.Desc(i));
    param.Unit = char(ParameterFile.Unit(i));
    addEntry(toolDataSectObj, char(ParameterFile.Parameter(i)), param);
end  

Answer 1

[Fangjun Jiang]

By default, Param.Min refers 'Param' as a structure and 'Min' as one of its field.

I've tested it. You can use

Simulink.data.evalinGlobal(bdroot,'Param.Min')

If 'Param' is in base workspace, it would be evalin('base','Param.Min')

[Anantrao]

Hello,

Thank you for your response. I tried it but it does not work, as shown in fig.

This gives me following error:

Error:Invalid setting in 'untitled/Constant' for parameter 'Value'.

Caused by:

Error evaluating parameter 'Value' in 'untitled/Constant'

Dot indexing is not supported for variables of this type.

So I don't know what I am doing worng?

[Fangjun Jiang]

Need to add two single-quote symbols. 'Param.Min'

[Anantrao]

Hello, still does not work!

[Fangjun Jiang]