MAX7219 Adding Special patterns to scrolling text code and adjust speed via POT

Thus 9000 character limit of this post i cannot paste the code here as text

No but if you read the how to use this forum sticky post it will tell you how to attach it.

Depending on what else your invisible code is doing then a simple delay based on the pot value might help you achieve this. If not then you write your code as a state machine like the blink without delay example.

any way to do this ?

I am sure there is, however not being able to see your code is not helping home in on the fine details of your problem.