variable lot size keeps repeating

[vulkanai]

Hello, need some help figuring this out. Every new trade adds its own lot size in a sequence. Variable "turn_1 and turn_2" works as it should, but every trade after keeps repeating "turn_2" lot size. Why wont it add "turn_3, turn_4" etc. what am i doing wrong?
Thank you.
https://fxdreema.com/shared/ijuFaJZXc