MATLAB: How to select/highlight a cell in the uitable automatically? Thank you.

automaticallyhighlightuitableupdate

Hi,
I am working on part of my project, which the code update the output automatically if user chooses some cell in the uitable:
suppose we have a 2 rows * 1 column in the uitable like the following:
A
B
In my projects, A and B correspond to different outputs: they plot different curves in the same axis. What I want to do is that:
1, when user chooses A, we plot the curve A in the axes,
2, when user chooses B, we plot the curve B in the axes,
3, if user chooses both A and B, the code would plot the curve A in the axes, and update the uitable with only A selected, ie, we force to choose one cell at one time.
My question is that: in case 3, when users chooses both A and B, how can I update uitable to make only A chosen/hightlighted? I can re-set the uitable, but I don't know to make A to be chosen automatically after I re-set the uitable.
Thank you.
Jon