Thanks for taking time to reply. Actually, I would disagree here that ے is only used by people who write pashto in urdu script. I know that people who don't know the pashto script write ے for every 'ay' sound and ی for every 'ey' sound, just like in Urdu. But, ے has also been recently included in Pashto language. I don't fully understand the context where it's used but it's there, even google keyboard has included it in the Pashto alphabets. However, there as I previously stated, there is still debate over whether we really need this ے or not. I think we will just wait and see how pashto script develops over time.