I previously asked you in the thread why you decided to forge a document containing your employer's signature. You have refused to answer thus far.
Nobody can give you an insight into this process - but believe me, if an immigration officer picks up discrepancies between the document you altered and what your employer tells them, then you're in trouble. He/she can ask whatever questions they want to verify your job and what you do.
I have no idea why you decided to amend an official document after it was signed. This is a very awful thing to do in Canadian culture and it generally amounts to a crime/misrepresentation.
I hope for your sake what you did was an innocent mistake or minor change for clarification, but for God sake do not ever do it again.