Changing Numeric Value

[redbull2k]

I would like to do some thing similar to this, and not sure how, ive got as far as getting the text, im grabbing the text, using Acc obj.

its for logging in as i have many log in accounts, and are like this example

loginaccount1

and then the next account will be

loginaccount2

and so on
up to loginaccount20

what im looking for is to add 1 each time i run the macro.
then all i got to do is enter my password by hand, it will help me a great deal.