How to show data in a textField on app designer?

Hello fellows,

I have a few problems in a app designer, a try to show data in a textArea component,but without success, can anyone help me to solve this issue?

Thanks in advance

function OpenFile(~, FilePath, FileName)
    app.TextArea.Text = 'testing';
end

Answer 1

[Kevin Holly]

It should be

app.TextArea.Value = "testing";

[Biza Ferreira]

Kevin Holly,

Thanks for your answer, but doesnt work. The command window give me the follwing response :

app= 
struct with fields:
TextArea:[1x1 struct]

[Kevin Holly]

Did you overwrite the variable previously?

Can you type:

app.TextArea

I have also attached an app with an example.

[Biza Ferreira]

Hello Kevin,

Thanks for your consern an help, i have made a mistake, but i have read some documentation and I found my fault, but all because your example. So the textField only update if the user press a button or made a command to call another function who as responsible to update the fields. So initialy in the function where I pass the parameter's I dont declare the parameter "app", this way the function dont found the scope and this way dont appear anything in text field desired.

Thanks again, cheers

[Kevin Holly]

If you could accept this answer, I would appreciate it.