close and change variable

[KiKikaKu]

Can anyone help me pls. if i want to put the variable to 0 when i have to close all. how can i write in block custom MQL code.

[jstap]

Undeclared identifier means you haven't created the variable first, go onto the blue variables tab in the top left, and add all names

[KiKikaKu]

@KiKikaKu
i already have the variable it. and what is the mean about "some operator expected"

[jstap]

All I can say is this is what I do and it works for me, try recreating the project from scratch, add a shared link instead of pictures, this way everything can be look at