statetree how to manual change the node status

on CPP, when i enter EnterState ,return EStateTreeRunStatus::Running.

i play a montage. and bind a delegate for montage blendout event with a function name [MontageFinished].

when montage play complete, will call func: [MontageFinished]

but this time , how can i return this node to EStateTreeRunStatus::Success;
i can’t find a function about it . so i just only set a bool , when i tick of this node.

return EStateTreeRunStatus::Success;