how to plot graph in gui?

Dear users.... I have a program like this.

function exgui
fh = figure( 'units','pixels',... 'position',[50 ,50 , 600, 500]);
X=[2 4 7] Y=[4 6 8] h=plot(X,Y,'--r','LineWidth',1) ;
end

But above program excute in matlab R2013 ,, it shows error like' the expression to the left of the equals sign is not a valid target for an assignment' .

Answer 1

[Azzi Abdelmalek]

X=[2 4 7]
Y=[4 6 8]
h=plot(X,Y,'--r','LineWidth',1)

Answer 2

[Joseph Cheng]

In your line

X=[2 4 7] Y=[4 6 8] h=plot(X,Y,'--r','LineWidth',1) ;

it is trying to set everything after the X= to X. you'll need a semicolon, or put each onto their own line.