programatically get the extern values

Is this possible with mql??

indicator X is active on the chart and it has 1 extern value set to Y.
Indicator Z is active on the same chart and wants to know the value of Y

Yes, you can override the extern values in code. easy just use the extern as a normal variable.

Easiest way would be to use global variables. You could also write the variables to a file just depends how many and what exactly you want to do.

Lux

i was trying to avoid having to modify each individual script to set global variables. But this is what MT4 allows, guess I'll go with it.