Identifying the component in biplot

Hello MATLAB community,

I am using the Factor Analysis in MATLAB, I would to identifying the each variable in biplot of lambda and factor, like that:

%Example help MATLAB Factor Analysis 
X = [Acceleration Displacement Horsepower MPG Weight]; 
X = X(all(~isnan(X),2),:);
[Lambda,Psi,T,stats,F] = factoran(X,2,'scores','regression');
inv(T'*T);   % Estimated correlation matrix of F, == eye(2)
Lambda*Lambda' + diag(Psi); % Estimated correlation matrix
Lambda*inv(T);              % Unrotate the loadings
F*T'; 
biplot(Lambda,'LineWidth',2,'MarkerSize',20)

I would to identifying each circle with the name of variable in the biplot,

How I can made this?

Thank you,

Guilherme Lopes