Launch Test on build result

I have two build steps

In second step I am launching some UI Test that looks like:

DesiredCapabilities appCapabilities = new DesiredCapabilities();
appCapabilities.SetCapability("app", @"ViewBrowser/bin/Debug/ViewBrowser.exe");
appCapabilities.SetCapability("deviceName", "WPF");
var includeController = new WindowsDriver<WindowsElement>(new Uri(@"http://127.0.0.1:4723"), appCapabilities);
includeController.Manage().Window.Position = new System.Drawing.Point(20, 20);
includeController.CloseApp();

But in my code I need to specify @"ViewBrowser/bin/Debug/ViewBrowser.exe". In my case what i need to place there because Test cannot find .exe file. I am new in Teamcity. Can you advice something?