Getting a range from a userform to use in VBA code

I require a user to input a range of cells into a UserForm by either typing in the reference or (more likely) selecting with the mouse. I have set up the UserForm with a RefEdit where the cell reference will appear and all appears well - the user can select the range of cells in the RefEdit box without difficulty.

Where I am struggling is when I come to use this info that the user has input. I cannot work out how to tell the rest of my VBA program what range of cells was selected in the UserForm.

Many thanks for any help.

Neil Spencer