This topic is about a missing block in the middle of 2013 
As I told you before, there are some basics. Now in your project you have "Once per trades" connected below "Buy now" and "Sell now", and nothing else below. In fxDreema all the things are top-to-bottom. Block X runs only if the one above passes.
I can suggest "Check last closed type" above "Indicator appear" blocks. If the last closed trade was Buy -> check the indicator to create new Sell and don't even enter in the Buy part.
You are right, I was still missing to fix some colors Now I think they are all fine.
It's ok to be like in the screenshot
Check if you recreate the button with the same block. This object should be created once, so maybe you can put it in "on Init"
I recently found that some colors are not correctly defined by me and I think I fixed it for the web version. But if not... try with another color. Those that are broken are few on the top of the list.
at the bottom of this page: https://fxdreema.com/documentation/gett ... indicators
In what situation do you see this?
I don't recognize this error message as fxDreema message, it is from the software I use to pack and create the .exe file. Unfortunately it often has issues and it's last update was almost 2 years ago. Try something with Compatibility
It seems that buttons are more like checkboxes, they are either pressed or not pressed
Here is something for you: https://fxdreema.com/shared/1tclI1t3
The best will be something like "Check if button is pressed" block, because I think these can be used a lot, but I don't know where to fit block with this name 
Then there are custom indicators for such things
http://docs.mql4.com/common/webrequest
__To be able to use the WebRequest() function, you must add an URL to the list of allowed URLs in the "Expert Advisors" tab of the "Options" window.[/quote:32tvu44o]
But this option is new and exists in the newest build
Now this is a little bit better, and it basically works, but you don't know what is the value of this constant EMPTY_VALUE. In the other project, from which you get that, I used it because it was needed there and I believe that I explained why - this constant has the maximum value for this numeric data type. It is confusing that it's name contains "EMPTY", which maks you think that it is 0, but it's not 0. And in your case you don't need this constant, you need 0.
This is not impossible. There is no global place to define import functions, but If you create a custom block, then in the smaller text field (the one at the bottom) you can put some global variables and import functions.
Import functions are not checked, the .dll file is not needed when the code is compiled (or at least this is what I remember). So the web version should still work. For include files the local one will be better.
For the buttons, I don't remember for what reason I didn't added this object, but if I add it, and also for any other object there is this "on Chart" event that is supposed to be used to detect when you click on something (for example). You tried that?
Done and ready to be tested. Notify me if something is not working as expected.
If it's for the EA itself, find a block named "Terminate"
Most guys don't know how to control their orders, these interactive things are like steps above the average In other words, this is not something that is my priorit... but who knows.
I think you still don't get it What is reset on each loop and what should be reset? Do you know why it must be reset?
These Variables are global variables. They have initial value, which can be anything, let's say 0. This is only the initial value, then it can be modified. The variable holds that value until you modify it or until you close that EA (then it disappears).
If you increment a variable on each tick, it's value will grow. Add the value of 1 on each tick to that variable - then you have a variable that holds the number of ticks.
So, this "For each..." block does even more. Within a tick it can cause the next block that is connected to it to run few times!
What is the idea of collection the total sum of... let's say lot sizes. What we want to do is to read the lot size of trade 1 and keep that value in our variable. Then we want to read the lot size of trade 2 and add this value to our variable. The same with all other trades. What we have at the end - the total sum of lot sizes.
But! On the very next tick we will do the same thing, because "For each Trade" is placed under "on Tick". Now, our variable contains a value that is the sum of all lot sizes. At this point we will just continue adding to that value. So yes, the value will grow without limits.
That's why we must reset that variable who collects this sum on each tick. We don't need to reset variable that will just be set with a single lot size value and is not used to collect data.
Hm, I'm not sure if this is even possible in MQL4/MQL5, at least without the use of some .dll. And why doing that, I think that each EA is responsible for it's own actions 
Ummmm...do you mean these blocks? http://prntscr.com/57loy3
I think I will, I will look at this tomorrow. One of my concerns is that while this value (Group) is an integer (numeric) value, it can be easily used for optimization. If I turn that into a string, then this will not be true anymore. Or maybe not, I'm not 100% sure. Also, the speed of the brown blocks will become a litle bit lower, because the string must be checked for "," and turned into integer. But you want it, so...
If the option to work with all available trades is suitable, otherwise I think that there is no easy way to do that But many people asked for this before, so I probably need to finally make it.