If statement dont execute argument

Doesn't start the arg of if statement with $LCD_ON Just a simple script in .sh in the image When I try to execute it... doesn't return what I expect. Now it returns:

[E] no device detected

CONFIGURAZIONEHDMI

But doesnt start to replace file and reboot

P.s. Yes the user and the file have privileges to do it And I already set chmod 777 the file