Not able to find delegate in lower model

Hi Experts,

I have created my own package and model in AX 7 , lets call it "TEST".

In application suite for one method in a class I had some customization which I am trying to handle with delegate. I have specified a delegate in Application Suite and Handler in my TEST model. But on Handler it is showing error that not able to find delegate.

Please look at the SnapShot for details.