In a graph, I want ticks but no values in x-axis

this may sound a bit silly, but I have a small problem. I have a standard graph and I would like to get rid of the values of the x-axis (the numbers) while still keeping the ticks... How can I do it? I tried and I didn't manage. So please give me a hint!
I attach a graph to explain what I mean... I don't want the binding energy values in the x-axis, I just want the ticks.
Igorexchange.png (54.59 KB)
double click the axis, go to "Label Options", then "Labels Off", or execute

ModifyGraph noLabel(bottom)=2