help with this problem please

hellos Folks,

i'm working on appdesigner and i'm using inputdlg to ask the user to save the results to wrokspace, I'm usng this code

  prompt = {'Choose the figure name','Choose the Tree name',...
                    'Choose the Clusters name','Choose the Roots name'};
               
                answer=inputdlg(prompt);
                
                if ~isempty(answer{1})
                    assignin('base',answer{1},app.Figure);
                end
                if ~isempty(answer{2})
                    assignin('base',answer{2},app.Tree);
                end
                if  ~isempty(answer{3})
                    assignin('base',answer{3},app.Clusters);
                end
                if ~isempty(answer{4})
                    assignin('base',answer{4},app.Roots);
                end
                

the problem is when i click Cancel button i obtain this error

Any soulutions please ?

Answer 1

[Alex Sune]

A good option is to use the try catch statement, then:

prompt = {'Choose the figure name','Choose the Tree name',...
                    'Choose the Clusters name','Choose the Roots name'};
answer=inputdlg(prompt);
try
    if ~isempty(answer{1})
        assignin('base',answer{1},app.Figure);
    end
    if ~isempty(answer{2})
        assignin('base',answer{2},app.Tree);
    end
    if  ~isempty(answer{3})
        assignin('base',answer{3},app.Clusters);
    end
    if ~isempty(answer{4})
        assignin('base',answer{4},app.Roots);
    end
catch
    %Some things to do if answer is not complete
end
                

Answer 2

[Abdelmalek Benaimeur]

Thann you so much, it worked