If you are wanting to use 3-10-16 in place of 12-26-9, you can write it as follows;

Pds1:=3;
Pds2:=10;
Pds3:=16;
Mov(C,Pds1,E) - Mov(C,Pds2,E);{MACD}
Mov(Mov(C,Pds1,E) - Mov(C,Pds2,E),Pds3,E){Signal Line}

Now if you wanted to make a set of trading rules such as when MACD Crosses above or below its signal line you can modify the above formula slightly:


{Buy}
Pds1:=3;
Pds2:=10;
Pds3:=16;
X:=Mov(C,Pds1,E) - Mov(C,Pds2,E);{MACD}
Y:=Mov(Mov(C,Pds1,E) - Mov(C,Pds2,E),Pds3,E);{Signal Line}
Cross(X,Y)

{Sell}
Pds1:=3;
Pds2:=10;
Pds3:=16;
X:=Mov(C,Pds1,E) - Mov(C,Pds2,E);{MACD}
Y:=Mov(Mov(C,Pds1,E) - Mov(C,Pds2,E),Pds3,E);{Signal Line}
Cross(Y,X)

Mark, The result of the formula is the same, factoring out the variables makes the code more maintainable (i.e. if you want to change parameters later on it's easier to modify the variable assignments than to dig into the code). Treatey