Lcd i2c pack mblock extension does not work


I am trying to use an LCD display (1602 addess 0x3F).
The only extention that allows me to specify the address to 0x3F is the “LCD I2C PACK”.
But nothing is displayed.
THe circuit is OK, I tested it with an Arduino sketch and it work fine.
THe extention is loaded correcly on the mBlock.

The script contains 3 blocks

  1. Set LCD at 0x3F has lines 2 16 characters per line
  2. Clear LCD at 0x3F and LINE 1 COL 1 DISPLAY “Hello, ME”
  3. Wait 30 seconds

Any suggestions are wellcomed.

#2 (8.9 KB)