GUI and line(input,input): Coordinates plot, line does not plot

The following code plots coordinate pairs inputted by the user. The points plot, however, the lines that are suppose to plot due to the line function are not plotting. Could this be due to the handles of the input of the line function (handles.X_coord, handles.Y_coord) or should there be handles on the line plot as well? Any reference is appreciated. Thank you.

function Coord_button_Callback(hObject, eventdata, handles)

hold off

 x_coord = handles.X_coord;
 y_coord = handles.Y_coord;
 
axis([0, max(x_coord)+1, 0, max(y_coord)+1])
member = line(x_coord,y_coord,'Marker','.','LineStyle','-');
set(member,'Color','red')

guidata(hobject, handles);

hold on

The following code is an example of what I mean by the lines to be plotted,

x = [ 0 1 0 1 1 1 1 2 1 2 1 2 2 2 3 2 3];
y = [ 0 0 0 1 0 1 1 1 1 0 0 0 1 0 1 0 0];

axis([0 3 0 3])
line(x,y,'Marker','o','LinStyle','-')