molanis.com/forum - Tools for MetaTrader : The place to ask about the best expert advisor builder, expert advisor downloads, and expert advisor programming

Hello Support,

I've got a question about using both "AND" and "OR" in a sequential series. Basically, I have four (4) MQL Blocks:

MQL Block(1)
MQL Block(2)
MQL Block(3)
MQL Block(4)

The trade logic requires:

MQL(1) AND MQL(2) -OR- MQL(3) -OR- MQL(4)

So, conditions 1 AND 2, or 1 AND 3, or 1 AND 4, will trigger the trade.

I've had much more complex problems to solve, but for some bizarre reason, I'm having difficulty linking these blocks correctly in the Diagram in a streamline fashion, without doing a whole lot of replication of MQL(1). So, to reduce the amount of block replication, I tried the following:



However, this presents a problem because in the "OR" layer, MQL(1) seems to be cut out of the equation where the connections are made from Start to MQL(3) and MQL(4). So, it would seem that the "OR" layer here, does not evaluate MQL(1) and MQL(2) as the trade logic requires, with MQL(3) and MQL(4) being evaluated in sequence as "OR" conditions. This looks suspect.

If this is somehow correct, please let me know. If not, what would I need to change, other than tossing everything under a single MQL Block and using "OR" pipes (||) to obtain the sequential (cascading) evaluation effect that I'm looking for. I could stick everything under a single MQL Block, but I want to see all the major conditions separately.

Thanks!
cfx

Hello Support,

Let me ask this question a slightly different way.

Would it be correct to say, that whenever I use just one (1) order execution icon like Buy (in this example), that ALL conditions ABOVE the Buy icon, get evaluated as a singular construct, even though those condition layers contain many (more than one) "AND" or "OR" operator?

Stated another way, is it true that no matter what I hang off the Start block, if ALL layers point to just one (1) Buy block, then even though some of the layers are separated by "AND" or "OR" - ALL conditions must be evaluated in the sequence in which they appear in the diagram?

Thanks,
cfx

Updated:

Tested the above diagram and it absolutely does not work as intended.

Ok, so - how do I get the "AND" to work with the "OR" in sequence?

Thanks,
cfx

Having the need to move along quickly, I simply reduced the problem using the following method:

MQL(1) AND MQL(2)

Where, MQL(2) now contains all sequentially evaluated conditions separated by 'OR' pipes (||) as follows:

(Condition1) || (Condition2) || (Condition3)



Hope this helps somebody out there.

cfx

You can also do:
A AND B connect to BUY
C AND D connect to BUY2 (same parameters as BUY1)
The effect is (A AND B) OR (C AND D) - it works fine if you control the max number of positions in the Start icon. It should be equal to one, otherwise two orders will be sent to the metatrader server

So, should I assume then that "OR" only works in-line by itself?

Else, one needs to "fabricate" an "OR" by essentially doing what you just said, creating multiple independent points of execution (Buy1, Buy2, Buy3, etc.) that use different MQL and/or TA+ blocks and controlling the number of Lots open at one time?

Thanks,
cfx

You cannot create nested AND - ORs unless you use the MQL icon. This means that you cannot create this (A or B) AND (c or D) unless you use the mql icon like you did

Got it. I've gotten used to using the MQL blocks anyway.

Thanks!