Yes, there is a way to do this. You can set the tlcvariable field for the rtwoptions parameter. This field is basically the parameter that appears in the config set (and you get the parameter value by passing this field). To set the BuildSuffixDir, get the active config set and get the value of the required parameter. Refer to code below:
rtwoptions(myoption).prompt = 'Version';
rtwoptions(myoption).type = 'Popup';
rtwoptions(myoption).default = '1';
rtwoptions(myoption).popupstrings = '1|2|3';
rtwoptions(myoption).tlcvariable = 'versionValue';
%----------------------------------------%
% Configure RTW code generation settings %
%----------------------------------------%
cs = getActiveConfigSet(gcs);
tmp = cs.get_param('versionValue');
rtwgensettings.BuildDirSuffix = ['_mytarget' tmp '_rtw'];
rtwgensettings.Version = '1';
I believe making the above changes in tlc should fix your issue. Refer to this MATLAB Answer with a similar problem:- https://www.mathworks.com/matlabcentral/answers/98859-how-can-i-change-the-code-generation-directory-depending-on-my-selection-of-the-system-target-file-i
Hope this helps!
