How to check if a object is nothing with usage of a index [resolved]

I have a program that supports plugins , now i want to create a nice plugin system that checks which of the objects is in use when one is nothing it should use that object variable , its name is MyPlug , it is devined as :

Private MyPlug(99) As Object

how can i check if it is nothing? :S

for i = 0 to 99
if myplugin(i) is nothing then
'whatver
end if
next i

personally i thnk you should use a collection instead.

yeah that works m8 , wondering why

if myplug(i) = nothing doesnt work , isnt "is" and = the same? if not for what do i use each

Is is one of those things that only gets used in like 3 situations. The only times I know if to use Is instead of = is...

VB Code:

If TypeOf control Is Textbox Then '...
 
If SomeVar Is Nothing Then '...
 
If SomeVar Is Null Then '...

Any other time you use =, unless I missed one.
:)

aha... ok i have learned form this :P yeah thanks m8's

Rule of thumb:
If it's an object, use "Is".
If dealing with a value (objects don't have value, they either exist, or they don't) then us "="