Project - Data Handling and Interpolation

VI=dlmread('matlab live.mat');
x=VI(:,1);
y=VI(:,2);
plot(x,y,'-ob','MarkerFaceColor','b','LineWidth',1.5)
xnew=linspace(max(x),min(x),500);
%%% intrepl(x,v,xq,method)
ynew=interpl(x,y,new,'spline');
hold all
plot(xnew,ynew,'.-r','linewidth',1);
legend('data','interpolation-spline','Location','northwest');

i've tried multiple times but still showing error

ive tried all ways

it says error reading the file

i've attached an image which shows the probem