Designator resolution now doesn't ignore the radius parameter. Also, min...

...or typo corrections.
Please use the `desig-prop` predicate instead of `lisp-fun desig-prop-value`. Try to avoid `lisp-fun` as much as possible.
E.g.
```lisp
(desig-prop ?desig (radius ?radius)
```
That will bind the numeric value specified in the designator to the variable `?radius`