Template for a sequence of 5 things in order

cond1:= ;
Cond2:= ;
Cond3:= ;
cond4:= ;
Cond5:= ;

{First - & }
init:=Cum(IsDefined(Cond1+Cond2))=1;
bin:=ValueWhen(1,Cond2-Cond1<>0 OR init, Cond2);
first:=bin AND (Alert(bin=0,2) OR init);

{Second - }
Init1:=Cum(IsDefined(First+Cond3))=1;
Bin1:=ValueWhen(1,Cond3-First<>0 OR Init1, Cond3);
Second:=Bin1 AND (Alert(Bin1=0,2) OR Init1);

{Third - }
Init2:=Cum(IsDefined(Second+cond4))=1;
Bin2:=ValueWhen(1,cond4-Second<>0 OR Init2, cond4);
Third:=Bin2 AND (Alert(Bin2=0,2) OR Init2);

{Fourth - }
Init3:=Cum(IsDefined(Third+Cond5))=1;
Bin3:=ValueWhen(1,Cond5-Third<>0 OR Init3, Cond5);
Fourth:=Bin3 AND (Alert(Bin3=0,2) OR Init3);
Fourth