vx0532:
Please read some of the threads at the top of the page.
My MT4 has be updated yesterday auto; and now I find that my MT vesion is still 4 build 600; and MetaEditor vesion is 5;
my question is that now I open mql4 file before and modify it by MQL4 and then compiled it to get ex4. file; now does this ex4 file can run well on MT4 pair chart?
In addition, if I made an EA on MetaEditor 5 by MQL5 and compiled it to get the execution file, does this execution file run well on MT4 pair chart?
Thank you!

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My MT4 has be updated yesterday auto; and now I find that my MT vesion is still 4 build 600; and MetaEditor vesion is 5;
my question is that now I open mql4 file before and modify it by MQL4 and then compiled it to get ex4. file; now does this ex4 file can run well on MT4 pair chart?
In addition, if I made an EA on MetaEditor 5 by MQL5 and compiled it to get the execution file, does this execution file run well on MT4 pair chart?
Thank you!