Is there a way to have an EA disable itself after it makes a trade?

What do you mean by disable itself? Do you mean to remove itself from the chart? Why don't you modify the EA to make the trade you want then stop trading?

__________________
Hope it helps !
Coders' Guru
Senior MQL programmer:
www.xpworx.com/custom.htm

I would like to have an EA Deactive itself at a specific time then Re-active at another time..

for example I would like an EA to De-Active at 1300GMt and Re-Active at 1800GMt