How can i delete the object?

[sang 0]

I draw the resistance line from the highest price of candle#8. When i run this EA, it draws the new line without deleting the old one. Please suggest to me how i can delete the old drawn line.

Thank you

[sang 0]

Sorry, I guess I post my question in the wrong area.

[roar]

Use these settings

[sang 0]

Thank you