Delete plot in a loop

HI, im new in writing graph, i have this code to create a plot by pushbutton9:

//x=0;

global b;

for i=1:100

x=[x b];

plot(handles.axes3,x,'b--');

grid;

pause(1);

end

guidata(hObject,handles); //

I try to delete plot by pushbutton10, but the plot disappeared for a moment and then appeared again, how can i fix this ????

[madhan ravi]

what does "//" mean?

[HANH TRAN]

Just note the code i write , dont worry about it

[Rik]

// is the comment flag in C. In Matlab it will just cause a syntax error.

Since you don't show us what that pushbutton10 does, we can't tell why the plot is recreated.

Also, why are you using a global? You have the guidata struct right there to share variables between callbacks.