Printing a plot but the graph is not showing, worked literally a couple days ago

I'm having to code a project and I've gone to office hours for help and I;ve finished the code, and it was showing my graph just a couple days ago. I log back onto my code and now the graph isn't showing. The plot will show, but there's not lines or anything showing my graph that im trying to print out.

lambda = I/b(i);

V = J * lambda/(2*pi) + V_inf*sin(beta);

V = [V:V(1)];

figure

plot(V);

This is the part of my code that has to work with the graph. I've already tried changing the brackets to parentheses but that does not change anything.

I'm still new to matlab so anything helps.

[Torsten]

After the line

figure

insert

size(V)

What do you get as output to the command window ?

[Victoria Rodriguez]

I get

1 1

and then an empty plot

[Torsten]

And what if you insert

V 

after the line

V = [V:V(1)] 

I guess you only have one data point (which might even be NaN).

[Victoria Rodriguez]

I get a singular number and then the empty plot again.

I'm emailing my TA to see if he has an idea as well, he basically wrote the project so hopefully he has some answers as well.

[Torsten]

What if you remove the line

V = [V:V(1)];

In my opinion, it does not make much sense.

[Victoria Rodriguez]

I got a graph! tysm!