How to Launch Application inside Citrix

Hi All,
I am new to Region mode.
my flow is look like this.( here i am taking startx,starty,endx,endy as dynamic)
attach-activate-maximize-get main screen bounds-get image-find image using image search utility-click image
But no luck as of now.
can any one explain or share a video link which contains fallowing tasks.

1. Launch Citrix
2. activate window
3.Maximize window
4.Launch target Application

if possible please send flow or share a video.

P. Gopi
Get Image step won't help out here
Use HTML mode to Identify the components in the web app
Identify the target application and there should be no issues