Plotting multiple boxplots in one figure from cell array

I'm trying to plot some boxplots on the same figure.

My Code

    d={12.9089000000000,'GA';13.3697000000000,'GA';13.4335000000000,'SA';13.5302000000000,'SA';13.8434000000000,'EP';14.2583000000000,'EP'} %snipped of data
    %Create groups
    EP=[];
    GA=[];
    PS=[];
    SA=[];
    SS=[];
    for i=1:size(d),
        if strcmp(d(i,2),'EP'),
            EP(i)=cell2mat(d(i,1));
        elseif strcmp(d(i,2),'GA'),
            GA(i)=cell2mat(d(i));
        elseif strcmp(d(i,2),'PS'),
            PS(i)=cell2mat(d(i));
        elseif strcmp(d(i,2),'SA'),
            SA(i)=cell2mat(d(i));
        elseif strcmp(d(i,2),'SS'),
            SS(i)=cell2mat(d(i));
        end
    end

%Plot boxplots
figure(1)
x=[EP,GA,PS,SA,SS]
g={'EP','GA','PS','SA','SS'};
boxplot(x,g)

This code however does not work. Could anybody show me how to plot these boxplots on the same figure whilst having the appropriate group name (variable 'g' in the code above) on the x axis?

Thank you