Smooth Falloff not working


I am currently trying to make a simple hill but the hills are not rounded. I have selected Smooth Falloff and am not sure what I am missing. I have attached my project below. Any suggestions and/or advice would be greatly appreciated! Thank you so much!

Noob TechStudent


Lab_5.blend (830 KB)

Increase the proportional sizes (mouse scroll wheel or PageUp/PageDown keys) so you can influence more than one vertex

Thank you so much! It works perfectly!