entity radius

i need get entity radius but not see the function

the meshwidth, meshheight and meshdepth i cant use, a entity is md2 model

simple and only way is to use variables to hold the radius

eg

Ball_RadWidth# = 3
Ball_RadHeight# = 5

entityradius ball , Ball_RadWidth# ,Ball_RadHeight#
.

Best way for me is to create type though with radius fields.

but i load the entity, i dont kown the size

i resolve this problem beacuse the scale of entity in load is one always