This is not a problem I would just like to thank you for for your videos. They are so easy to follow, concise and to the point. I am limited in my knowledge of plcs I have watched your video on tia FBs and Fcs I had figured out how to use them your video explains when and why, I liked how you explained how to use the same function to fill different glasses, very helpful. The next programming job will be Modbus master on S7, do you have any videos? Again thank you