Applying a template to all open charts via a cBot

I have been trying to find a way in cAlgo to write a cBot that only makes use of OnStart() who's purpose is to cycle through all of the open charts (I typically have 22-24 charts open) and apply a specific template to each one. Importing the user32.dll and using System.Runtime.InteropServices I am able to obtain the handles for the parent window and all open child windows.

For a point of reference, in MT4 you can do what I am attempting to do in cAlgo/C# by issuing a PostMessageA() call to each window, passing the WM_COMMAND as the second parameter and the numeric offset from the top of the templates list added to 34800 as the third parameter. It looks like this:

   PostMessageA(iChild, WM_COMMAND, 34800+TemplateNo, 0);

WM_COMMAND is simply 0x0111.

The TemplateNo is an integer specifying the offset from the top of the template drop-down menu list, with the first template offset at 0. So say the template I want to apply to all of the open charts is called Pivot-v1 and lets say it is the 4th template in the drop-down menu list, then TemplateNo would be set to 3, and the third parameter in the PostMessageA call would be 34803.

What is the equivalent for cTrader? I would like to write the cBot to do the same sort of thing.