On ActionChanged this version

on_regency_start

If
- Succession lawIs NOT an elective system
- Does NOT have an Heir
- Regency type: Notregency_type:expedition_regency
ThenEvery subjectwhere
Is subject type: Fiefdom
Make subject of: Target: Previous · Vassal
If
- Is in a Union
  Union exists
  ↗
- Regency type: Notregency_type:expedition_regency
ThenUnion
Every active resolution
Previous
End vote: Resolution: PreviousResolution

Exact script

Requires 1

FiefdomEffect

Grants 1

VassalEffect

Scripting 1

Uses 1

is_in_unionEffect