__Indicators has buffers. Every buffer has a value all the time, even when the indicator line (arrow, histogram) is not visible. In this moment the value of this buffer is 0 or 2147483647, it depends on how the indicator is programmed. 2147483647 is the biggest integer value and in MQL4 is presented by a constant called "EMPTY_VALUE". Not all custom indicators can be used in EA, it depends on the programmer as well. Some of the custom indicators may have values on their buffers, or value that does not change, and that's why I created this block "Levels tester...". Now, when you know what the buffers gives to the EA and when, it's a matter of conditions to create a proper trading signals.[/quote:2q6jx9hn]
Thank you now its clear for me