Using a Start Date in a System ?

["Sentinel Trading" <rjbiii@xxxxxxxxx>]

In using a start date to turn a system on will placing the start date in front
of a moving average of 50 days for example cause the system to start calculating
the 50 day moving average after the start date? 

Ex.  If Date > StartDate then begin if Close Crosses above Average(Close,50) 
Then Buy High + 1 point Stop;

If so then would it be correct to place the start date after all other
conditions need more bars back that the start date would allow?

Ex.  If Close Crosses Above Average(Close,50) Then Begin If Date > Start Date
Then Buy High + 1 Point Stop;

Thanks for any help.





"When death's dark stream I ferry o'er
     In heaven itself I'll ask no more
 Than just a Highland welcome."

Sentinel Trading
 rjbiii@xxxxxxxxx