MATLAB: Mask editor problem.

Question

Pleas how can i creat a variable in mask that can be calculated from other two variables from the same mask like x=a+b, i tried to use the instruction ' * set_param('model/block','variable','a+b');*' in the Initialization, but no result appear in the mask, pleas how can i make this variable automaticly updated working?

Answer 1

In Mask Initialization function

aVal = str2double(get_param(gcbh, 'a')); % a is existing mask parameter
bVal = str2double(get_param(gcbh, 'b')); % b is existing mask parameter
set_param(gcbh, 'c', num2str(aVal+bVal)); %c is existing mask parameter