Let's say the first NumericEditField is called EditField1 and the second one is called EditField2, and their ValueChangedFcns are called ValueChangedFcn_EditField1 and ValueChangedFcn_EditField2, respectively.
In general, you can get or set any NumericEditField's value wherever you need to by referring to app.EditField1.Value or app.EditField2.Value (or whatever they are called in your app).
So, in this situation, in the second NumericEditField's ValueChangedFcn, you can get the value of the first NumericEditField:
function ValueChangedFcn_EditField2(app,evt)
x1 = app.EditField1.Value;
% now do whatever you need to do with x1
end
And you also might update EditField2's Value whenever EditField1's Value changes:
function ValueChangedFcn_EditField1(app,evt)
x1 = app.EditField1.Value;
c = 5;
x2 = x1^c;
% set EditField2's Value to x2:
app.EditField2.Value = x2;
end
