Trying to advance list state machine using function

[zekecato]

Here is my Ink Code

LIST mission_name = (not_yet_accepted), beginning_mission_state, middle_mission_state, completed

=== function advance_mission_state(ref mission)
    // if the mission is at the last state I guess we can restart it    
    { mission == LIST_MAX(mission): 
        ~ mission = LIST_MIN(mission)
    - else:
    // otherwise advance the mission
    ~ mission++
    }
  ~ return mission

=== testing_zone ===
// sticky choices for testing
+ [Advance Mission State -- Current Mission State: {mission_name}]
Advanced Mission State To {advance_mission_state(mission_name)}
-> testing_zone

I am expecting the mission state to advance when I click the choice, but it doesn't. Can anyone help me understand this?

[joningold]

You need
{ mission == LIST_MAX(LIST_ALL(mission)):

on the conditional in the function. LIST_MAX finds the maximum in the list variable, which is the current value! LIST_MAX(LIST_ALL(...)) finds the max in the full list available.

[zekecato]

Thank you. My Hero! Worked just how I wanted.