Ayman,

I don't keep track of history, nor I have enough time to waste.

What I wanted to show you, was the fact admitted by you in your previous post. You admitted that you checked everything, but it was your professor who caught the probelm.

And again this time, you are insisting that everything is alright.

Kindly check again, where you are doing a mistake. If there was no probelm in the circuit, you shouldn't have been here on this forum.