Celestial Okami with BP (Inspired to C#) Problem

Hello everyone i need you help, i will try to recreated a Celestial Okami on BP.

For people who do not know what it is, I send you the link of the direct tutorial to give you an overview of what I want to do:

Okami’s Celestial Brush | Mix and Jam - YouTube (5min21sec)

I recreated the structure of the pdollar (C #) in this link in BP except that I end up with an infinite loop when I apply a Do While which (i created this). I would just like to learn my mistake

Here are the pictures:


Thanks for the help !

Can anyone help me ?