I'm trying to use the Tuple concept of returning more than one parameter from a procedure. I get this error " No overload for method 'GetTradeLoop' takes 2 arguments"
The code is the area is as follows

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I have 2 arguments there what am I missing.
The return code is

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Take Care.

A little progress, I removed "dblGainLoss, Buy_Disp" from the call GetTradeLoop. Now it compiles and runs, however no data coming back. I may have build the DataSeries items bar by bar.

GetTradeLoop isn't defined to accept parameters but you are passing arguments when calling it.

Now that it's running I'm using PrintDebug() to see what is happening...looking good now.

In my latest strategy update, I wanted to display a DataSeries of Gain/Loss for the stock back-test. I generated the desired chart, but I couldn't access curve data value such to change indicator color when showing a loss. Cone suggested that I split the strategy into 2 parts and converting the For trading loop to a procedure. That worked and now I could display a chart with green and red colors depending on whether a gain or loss. However I had 2 more DataSeries that I also wanted to show and they also were generated in the For trading procedure. A procedure can only return one parameter. Requesting assistance, Eugene suggested I use a Tuple to return the items I want. A tuple can combine several parameters into a single package and thus return just one item. The difficult part is how to format the code so I could compile the strategy. With time, books, and using Google, I was able get the strategy to compile. The strategy now returns 3 DataSeries. I have attached a sample display. I generate the Buy - Sell Indicators by looking at several WL indicators e.g., Hull moving averages bar by bar and then either adding a one or subtracting a one and the plotting the result. Notice on the Gain/Loss chart that the curve changes to red when going below zero percent. The Tuple code to combine the 3 DataSeries into one package is shown below.

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The next part is to open the returned Tuple and get the Requested DataSeries. One needs to create a tuple and get the data, see below.

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The strategy uses Heikin-Ashi candlesticks to generate a Buy signal and the uses a trailing stop for a Sell signal.
Thank you so much to both Eugene and Cone for all the assistance. I have learned much in this process.

Another construct might be...

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Looks good.