Keypand Sequence detection using stateflow

Hello experts,

I am a student studing engineering. I was given a task to design a keybad scanner using the statechart. to create the keypad i used regular switches and connected the rows and coloums accordingly.

My problem is that i am using a mux connector, therefor the result is a vector. Is there a way, i can change this vector into a sequence pls?

Best regards and thanks