Is there any way to acquire the key password with this eis?

2007 Mercedes R350 with w164 EIS

pulled a w211 st12 out of a benz on sunday. read the eeprom with vvdi prog. loaded file with vvdi mg. prepared key file the wrote to vvdi bga key. 1st key is currently still working. wrote 2 other keys. tested each one 4 time or more both starting the vehicle and testing remote unlock/locking button...