Global optimization: transfer variables to non-linear constraints

Hey guys!

I have an optimization problem and would like to define a nonlinear constraint in the function provided for it (unitdisc).Unfortunately I am unable to transfer the variables as input or globally. Do you have any tips for solving this problem. It looks like this for me:

e = @(x) transpose((xd * x) + xc) * x; 
nonlcon = @unitdisc; %Can I add here the Variables?
problem = createOptimProblem('fmincon','objective',e,'x0',Initv,'lb',lb,...
'ub',ub,'nonlcon',nonlcon,'options',options);

[x] = run(gs,problem);

% and then

function [c,ceq] = unitdiscc(x,a,b,c,d...)

Answer 1

[Stephan]

nonlcon = @(x)unitdiscc(x,a,b,c,d...)

[Kai Krickmann]

Thank you for your prompt reply!