It's good for someone to try new things, but if you find that some block does not work as expected - tell me instead of trying to find alternative and more complex way of doing the same thing. If it's broken I will fix it.
It's not possible to work with another symbols when backtesting, only the current one is allowed, this is from MT4. Maybe this causes confusion. Otherwise on demo it's possible, but more difficult to test something there...
I can see in your project that you are using specific market (symbol) names, and in this case the block sees only those. Try with "Any market" for Market mode.
http://fxdreema.com/shared/RVb6OVwZd
This one does not draw arrows for me, now it's 00:25 server time. If you have another configuration, give me some example or tell me the id ot the project.
I will probably add options "Clear SL" and "Clear TP".
Well, I'm not gonna sit and wait for spread to change in order to test your example, so I built more simple example with no conditions at all. Is it working for you? When the option is "Fixed pips" and the value is "0" it should clear the SL.
Now this works for me: http://fxdreema.com/shared/aqnYA57Gc
Buy opened with 100 pips SL and TP, then TP modified to 50 pips and SL is gone.
What do you want to do?
Yes, when it is set to 0 it should clear stops. Fixed that.
I can admit that I found what this button "Expert Advisors" do months after I launched fxDreema. And years after that (today!) I found what the gray icon means: http://forum.mql4.com/54308 
In your "Comment on chart", put something in "Label 1" field. Without label name there is no output.
Objects are identified by name. There are 2 ways to select an object - by name or by searching in objects for some criteria. Take a look at this: http://fxdreema.com/shared/2N42MbMcb
All object has Price 1, some of them also have Price 2, and few of them are with Price 3 as well... it depends on the object type, these prices are actually the price coordinates of the object.
I don't even know what this gray icon means and why is it that color. I have tens of EAs in my list and some of them are gray, some of them are blue... but who cares. Just double click on it, and also enable experts via "Expert Advisors" button above.
The first thing to do with any new EA is to backtest it - use "View -> Strategy Tester" tool for that. Using "Visual mode" is a good idea.
Then, to test it on a demo account, add the EA to the chart (double click). Look at the smile picture on the upper right corner of the chart - if it is 
then click on "Expert Advisors" button to enable EAs.
EA generated with fxDreema should write "Starting" by itself (top center of the chart where it's working), and when the first tick comes - "Working".
Then I don't know the meaning of word "show" - what do you expect really? Because what "Formula" block do is to make a simple math calculation and write the result in a global variable, and this global variable itself exists in form of bytes somewhere in your RAM memory, so what do you want to do with it? Where do you want to see it?
I added this parameter, with different name, but you will see it. The only thing is that I didn't tested it so much, so I'm not sure if it's working, but you can try it.
Aaaah, click on some of the rows below - Data row 1, Data row 2... Maybe I have to add small "+" to these 
And then write something as label, for example under Data row 1 write some text in Label 1 field.
Ok, what means that it's not working?
You can start with something simple, that's what I can recommend. Simply "No trade is running -> Buy now"... and continue to add layers to the strategy. In your current "unnamed" project you can disconnect the line that connects the output of block 4 with the input of block 1 - it's not needed.