Thank you So much.
But can I ask one more thing if you don't mind?
It would be good that the original version adds to your version.
In other words, When I command this lisp, I'd like to have 2 options.
First, I'd like to set a specific point by the mouse click like the original version.
Second, if I don't need a specific point and just push the spacebar, It could set a center point automatically like your version.