error message 'The end operator must be used within an array index expression.'

Hi,

When I try to plot

plot(H20Vs{1:end,1},H20Vs{1:end,2})

hold on

plot(M20Vs{1:end,1},M20Vs{1:end,2})

hold on

plot(N20Vlin{1:end,1},N20Vlin{1:end,2})

% hold on

% plot(P20Vs{1:end,1},P20Vs{1:end,2})

legend('a' ,'b', 'c', 'd', 'e', 'f', 'h', 'l', 'm', 'n')

I recieve this error message 'The end operator must be used within an array index expression.'

Does anyone have any idea why this could be happening? I noticed the last two plot functions don't cause this issue, only the first one.

Cheers