[Konstantinos]

Are you sure that Owner's name doesn't exceed 24?

I used:

pawn Код:

public OnGameModeInit( )
{
    printf( "The name is \"%s\"", NameWithoutUnderscore( "test_TEST" ) );
    return 1;
}

stock NameWithoutUnderscore( _name[ MAX_PLAYER_NAME ] )
{
    for( new i, l = strlen( _name ); i != l; i++ ) if( _name[ i ] == '_' ) _name[ i ] = ' ';
    return _name;
}

It compiles and prints:

pawn Код:

[18:27:46] The name is "test TEST"