As far as I know, It's not possible to have
OnActivate>Self>FireRelay
OnRelay>Self>FireRelay
OnRelay>Player>AddHealth>5
or
OnActivate>Self>FireRelay
OnRelay>Self>FireRelay
OnRelay>Player>VCE_ifValue Thirst = 0
OnVariableTrue>Player>Kill
OnVariableFalse>Player>VCE_ModVariable> Thirst >Subtract> 1
If this is possible, I'd appreciate help. If not, This would be great to have. Please consider this.