So I'm working on setting up multiple EA's on MT4. I would like to have globals make changes to multiple EA's at once. For example, If I wanted to pause trading, I could change a pause = n to pause = y, would that actually make changes on all of the EA's at once? Additionally, is it possible for an EA to change a global variable? For example, a variable that would be a total number of all trades open on all charts. So I have 5 trades open, the global variable would actually reflect 5, and if another one is opened it would reflect 6. Is that possible? I know these are somewhat noobie questions, but I'm still in the structure phase of putting this together and want to make sure it is something that can be done before I waste a bunch of time on it.