functions doesn't work

[MNP89]

Hello,
I'm using the MakeCode tool for a Microbit version2 and I imported the library as suggested in the following link https://www.waveshare.com/wiki/1.8inch_LCD_for_micro:bit.
Then, I understood that the guide is related to microbit v1 like also the library function but I think that the procedure should be similar also for Microbit V2.
Anyway, considering the following steps:

the microbit seems that not communicate with the display and remains always white.

Did I forget something?
Do you have some suggetsion?

Thank you.

[kevinl95]

I was observing the same until I added the "Show Full Screen" block at the end:

[MNP89]

Thank you for your reply.

With your suggestion, It works.
Then , are there some function to get the number of pixel used when a string or number is wrote?
Is it possible to change the string font size?

Thank you in advance.

MP