Function doesn't return more than one value.  

if you want to get more than one result, we can write 
function for that.  After u will get the value u have to 
split the value.

Example:

Function AddSub(a, b)
    som = a + b
    subt = a - b
    AddSub = som&"/"&subt
End Function

this function returns only one value. But it's having two 
results(i.e Addition and subtraction of two no.s).

After u will get this value. u have to split that one for  
two results by using split function here delimeter is "/".

like this we can add more than one result to the return 
variable(in this example AddSub is the return variable).

Another way to handle more than one return value is using
arrays and also use global variables.