User controlled axis limits

I have a working code that allows the user to control the axes limits in a GUI figure. The only problem is, let's say I'd like to change my x limits. When I change the lower limit it works perfectly fine, but when I change the upper limit, the lower limit autoscales to its original value. I'm using this line to control my edit-text boxes:

xlim(handles.axes1,[user_entry Inf]);

Is there anything else besides 'Inf' I could use so that the other limit stays the same? Thanks in advance

Answer 1

[Azzi Abdelmalek]

xl=str2double(get(handles.axes1,'xlim'));
xl2=xl(2)
xlim(handles.axes1,[user_entry xl2]);

[Melvin]

This worked perfectly, thank you Azzi.