How to change the button names depending on different situations?

I'm referring to buttons within app-designer. For example,

I would want the button to be called "load" in one situation, and "plot" in another situation, even though they are the same button.

Many thanks.

Answer 1

[Fangjun Jiang]

a=uicontrol;
a.String='load'
a.String='plot'

[Leon]

Thanks. My button is called app.A.

I tried to use :

app.A.String = 'load' 

and get the below error:

Unrecognized property 'String' for class 'matlab.ui.control.Button'.

[Fangjun Jiang]

app.A.Text

[Leon]

It works. Many thanks.