Optional Parameter in User Function.

[matalog]

Is there anyway to set an optional paramater in a User created function?

I use the following all day, to convert feet to inches:

Code:

EXPORT F2M(A,B)
BEGIN
 C:=A/3.28084;
 D:=B/39.3701;
 E:=C+D;
 RETURN ROUND(E,2);
END;

I press a user defined key that types into F2M() for me, and leaves the cursor in the brackets, which is very convenient.

Quite often, I do not need to input any inches, and therefore would like to be able to set B as an optional parameter/variable in the function, where the function will default B to Zero when it is not input. The function will currently not run if I do not enter a value for A, and a value for B. F2M(6,2) is an accepted input, but F2M(10) will not work, and I would like it to, instead of having to type F2M(10,0).