set property of graphicsobject in array before R2014b

I have want to make my GUI compatible <R2014b (see https://de.mathworks.com/help/matlab/graphics_transition/graphics-handles-are-now-objects-not-doubles.html) Specifically, my question is how to write the following using set(object,value) since "." (dot) notation is not allowed...

handles.panel.children(4).position(3) = some value

Answer 1

[Jan]

pos = get(handles.panel.children(4), 'Position');
pos(3) = some value;
set(handles.panel.children(4), 'Position', pos);

Maybe it is easier to use this tool: FEX: DotNot, but I have not tested this yet.

[Manuel]

pos = get(handles.panel.children(4), 'Position');

yields in R2014a < R2014b:

Attempt to reference field of non-structure array

[Jan]

As you can imagine, I do not know what is stored in "handles.panel". If this is a handles of a uipanel, you can apply the method I have showed you already instead of waiting, that someone else does it for you.

children = get(handles.panel, 'Children');
pos      = get(children(4), 'Position');
pos(3) = some value;
set(children(4), 'Position', pos);

Do you see, how the dot-notation and get/set are related?

H.Prop = Value
% is equivalent to:
set(H, 'Prop', Value);

Value = H.Prop;
% is equivalent to
Value = get(H, 'Prop');

[Manuel]

...just wanted to point out, that the way it is written above it does not work. Thanks for your effort! much appreciated!