Changing parameters in a running EA

Does anybody know what happens if I have an EA running and deside to change one of the parameters? Does the EA start over? Is my new parameter value in use or is the old value still stored?

For example if I have a profit target and started with $100 and changed it to $75, what happens?

The EA will rerun through the init() function.

Depending on how the EA is written, if it has a memory, there should be no problem, if the EA has no memory, then the trade could be prematurely closed or mismanged.

Thanks, that's what I thought would happen. Right now it checks for open orders and will not re enter if there are orders, so that part works. So if it runs through init() then my new parameters would be used right?

Yes

you can check the return value of UninitializeReason() in deinit() and in init() for one of the REASON_* values, so you can leave out certain initializations or do additional things if a parameter change took place.