I'm making an EA but I can't get the button to change the symbol, does anyone know how to do it?

I'm making an EA but I can't get the button to change the symbol, does anyone know how to do it?

attached photo of the loaded indicator, the same or load with the mq4 so it is well screwed.

Hi Fxdreema I am using mt4 and I am using the NumberNr indicator that I attached, this indicator paints the 00 levels in the graph and what I want to do is the following rules:

Please if anyone can help me figure out how to do this.
This happens because of the quality of the historical data, when you perform the backtest in non-visual mode the ticks travel faster and if there are deficiencies in the historical data is even worse, when you do it in visual mode the analysis is done more slowly.
Hi, I need your help @fxdreema @miro1360 because I have an EA placed in several pairs and I want to make a button that starts or pays that EA only in that pair, I mean when the button is not highlighted it is red indicating that the EA is not active and when Click on it to change to green indicating that it is active now, I just want you to disable a part of the EA, frame with an area in Tick and Init that I have problem with. I appreciate all the help you can give me.
https://fxdreema.com/shared/84JChuI1d
I can help you, write me to the mail with the indicator and how it would be the entrance and exit ardfproyectos@gmail.com
@vish first, many thanks for answering
with respect to the suggestion I understand, but if I do so the trailing stop would work for each operation and I want it to only apply to 50% of the operation that remains open when it arrives at the original TP. If I do not explain myself well please tell me since English is not my first language. Tell me if I am wrong in my interpretation of your suggestion
My problem:it closes operations before stop loss without reaching the level it places, nor closes 50% of the transaction when it arrives at the TP, it does it before and the other 50% of the transaction does not follow the trailing
What I tried:I put the modules so that it verifies for each operation how much distance they have from the TP, if they reach 100%, that is, the TP should close 50% and the other 50% should apply the trailing stop with the SL at 50% of the price. opening and TP
What I expect:I hope the TP is 1 ATR and the SL 1.5 ATR and when the transaction reaches the TP it closes 50% of the operation and the other 50% applies the trailing stop moving the SL to 50% of the opening price and the TP. The system has 3 different strategies to open purchase and sale operations each one separates them with a different group number and the general magic number places it at 0, I think it is done so that it works as I want. The TF in which this system works is daily.
My platform:MT4