MATLAB: How can i set all of them concurrently in gui

Question

a1=double2str(set(handles.edit4,'string',svr));
a2=double2str(set(handles.edit12,'string',yy));
a3=double2str(set(handles.edit3,'string',xx));

Answer 1

a1=double2str(set(handles.edit4,'string',svr));

This does not make any sense. What do you want to achieve?

set(handles.edit4,'string',svr)

is more logical, or maybe

set(handles.edit4,'string',num2str(svr))