compile error: expected array ; binomial asset pricer

hello,

i am trying to create a binomial asset Pricer and am expecting an output of ~$6.37 from my code.

i am getting the below error:
error.png

please help, thank you

full code:
BAPM_v1.xlsm

( removed )

Originally Posted by WideBoyDixon

Well, variable S is passed as a Double. The line of code that's failing is trying to reference S as if it were a two-dimensional array. VBA is expecting an array when you reference array indices but it's not an array; it's a Double.

WBD

Gotcha!
What Can I change it to? I don?t believe it needs to be an array. That line should output just 1 # per line