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size of Low, High, Open, Close arrays

i ran my EA on a computer, and i saw that the size of the tables (Low, High, Open, Close), that i use to compute some statistics is 101. ok. On another computer on which i work now, i print the size by using ArrayRange function , and i obtain 12. It is very few for statistis. But on ths graphic, i

connexion to a broker

Hi, i started a few ago on MT4. previous steps were a lot, the last one was to install MT4 platform under PlayOnLinux. All seemed to work correctly. Now i want to test some EA on the platform. It seems to be dedicated for that, using button "start' on lower rigth. But i receive only a strange