Goal: Change the pin code from 456673 to 123678 for the letter. .
Steps:
action: action_type: click
step_instruction: clear the pin code no 
action: action_type: click
step_instruction: clear the pin code no 
action: action_type: input_text
text: 123678
step_instruction: enter pincode 123678
action: action_type: wait
step_instruction: enter pincode 123678