exec
Executes the action and unlocks a mine level.
Return
If the mine level isn't maximized it's null or the error message if it is
Since
0.2.0
Parameters
player
The player who performed the action
Executes the action and unlocks a mine level.
If the mine level isn't maximized it's null or the error message if it is
0.2.0
The player who performed the action