Changing axes values in a GUI

Write a GUI function to plot any user entered 1D function as shown below. User uses the edit text box to enter a function, then hits the enter key to plot it in the axes window.

Then add two “edit box” controls to change the range of the x-axis.

The minimal x has an initial value of 0; whereas the maximal x has an initial value of 100.

Change their values and enter the return key will update the plot with new axis limit.

I have the GUI written, and I am able to plot the function, but I am having an issue with being able to change the x-axes values with the two edit text boxes. Any help is appreciated!