Class diagram error

[Erick]

I've created a class diagram which has a method with 2 paramaters and
returns a void
When i check the uml code in Visio it says that you can't have a
parameter with a datatype of void

Visio adds the return type under the paramaters options.

If i remove the paramater then visio complains that my method has no
return type.

Is there some other option or am i doing something wrong..any help
appreciated

Erick