Is there a 'find and replace' functionality for Simulink block parameters?

I have a model with many blocks which use the same variable as the values for block parameters.  Now I would like to change the variable name, but do not want to manually update each block parameter.  Is there any way to find and replace all of these block parameters with the updated variable name?

Answer 1

[MathWorks Support Team]

Please use the documented workflow in the GUI:

https://in.mathworks.com/help/releases/R2022b/simulink/ug/workspace-variables-in-model-explorer.html

If you need a programmatic way, you can use the Simulink API to create a function doing it.

An example implementation can be found in the following:

function [replacedBlks,replacedProperties]  = findReplaceParamInMdl(mdl,oldParamName,newParamName)
arguments
    mdl (1,:) char {mustBeText}
    oldParamName (1,:) char {mustBeText}
    newParamName (1,:) char {mustBeText}
end

replacedProperties = cell.empty(0,1);

%Can be used to specify where the search needs to be done, etc.
opts = Simulink.FindOptions("FollowLinks",false);

replacedBlksH = Simulink.findBlocks(mdl,'BlockDialogParams',oldParamName,opts);

for idxBlockToReplace = 1:length(replacedBlksH)
    tempBlock = replacedBlksH(idxBlockToReplace);
    dlgParamsStruct = get_param(tempBlock,'DialogParameters');
    dlgParams = fieldnames(dlgParamsStruct);
    replacedPropertiesBlk = string.empty(0,1);

    for j = 1:length(dlgParams)
        if strcmp(get_param(tempBlock,dlgParams{j}),oldParamName)
            set_param(tempBlock,dlgParams{j},newParamName)
            replacedPropertiesBlk = [replacedPropertiesBlk; string(dlgParams{j})];
        end
    end
    replacedProperties = [replacedProperties;{replacedPropertiesBlk}];
end
replacedBlks = getfullname(replacedBlksH);
end

Answer 2

[Song-Hyun Ji]

Since R2021a, you can use "Find and Replace Text" to replace the found text at once in Finder as in the below-captured image.